| 
                 
                    Closing price on 8/26/2008
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    96.50 | 
                 
                
                    | High | 
                    96.50 | 
                 
                
                    | Low | 
                    88.50 | 
                     
                
                    | Volume | 
                    53,040 | 
                                 
                
                    | Split-adjusted Price | 
                    1.57 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VSC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/26/2008
             | 
            
                -3.50 / -3.80%
             |             
            
                96.50
             |           
            
                96.50
             |               
            
                88.50
             |                           
            
                88.50
             | 
            
                88.50
             |                     
            
                1.57
             |                                 
            
                53,040
             |            
            
                 
             |                                       
         
    
        
            | 
                8/25/2008
             | 
            
                +4.00 / +4.55%
             |             
            
                92.00
             |           
            
                92.00
             |               
            
                90.00
             |                           
            
                92.00
             | 
            
                92.00
             |                     
            
                1.64
             |                                 
            
                115,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/22/2008
             | 
            
                +2.00 / +2.33%
             |             
            
                90.00
             |           
            
                90.00
             |               
            
                88.00
             |                           
            
                88.00
             | 
            
                88.00
             |                     
            
                1.57
             |                                 
            
                102,520
             |            
            
                 
             |                                       
         
    
        
            | 
                8/21/2008
             | 
            
                +4.00 / +4.88%
             |             
            
                85.00
             |           
            
                86.00
             |               
            
                84.00
             |                           
            
                86.00
             | 
            
                86.00
             |                     
            
                1.53
             |                                 
            
                82,390
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/20/2008
             | 
            
                +3.50 / +4.46%
             |             
            
                82.00
             |           
            
                82.00
             |               
            
                82.00
             |                           
            
                82.00
             | 
            
                82.00
             |                     
            
                1.46
             |                                 
            
                92,050
             |            
            
                 
             |                                       
         
    
        
            | 
                8/19/2008
             | 
            
                +3.50 / +4.67%
             |             
            
                78.50
             |           
            
                78.50
             |               
            
                78.50
             |                           
            
                78.50
             | 
            
                78.50
             |                     
            
                1.40
             |                                 
            
                96,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/18/2008
             | 
            
                +3.50 / +4.90%
             |             
            
                75.00
             |           
            
                75.00
             |               
            
                75.00
             |                           
            
                75.00
             | 
            
                75.00
             |                     
            
                1.33
             |                                 
            
                12,340
             |            
            
                 
             |                                       
         
    
        
            | 
                8/15/2008
             | 
            
                +2.00 / +2.88%
             |             
            
                71.50
             |           
            
                71.50
             |               
            
                71.50
             |                           
            
                71.50
             | 
            
                71.50
             |                     
            
                1.27
             |                                 
            
                6,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/14/2008
             | 
            
                +2.00 / +2.96%
             |             
            
                69.50
             |           
            
                69.50
             |               
            
                69.50
             |                           
            
                69.50
             | 
            
                69.50
             |                     
            
                1.24
             |                                 
            
                81,970
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2008
             | 
            
                +1.50 / +2.27%
             |             
            
                67.50
             |           
            
                67.50
             |               
            
                67.00
             |                           
            
                67.50
             | 
            
                67.50
             |                     
            
                1.20
             |                                 
            
                55,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/12/2008
             | 
            
                +1.50 / +2.33%
             |             
            
                66.00
             |           
            
                66.00
             |               
            
                66.00
             |                           
            
                66.00
             | 
            
                66.00
             |                     
            
                1.17
             |                                 
            
                45,580
             |            
            
                 
             |                                       
         
    
        
            | 
                8/11/2008
             | 
            
                +1.50 / +2.38%
             |             
            
                64.50
             |           
            
                64.50
             |               
            
                64.50
             |                           
            
                64.50
             | 
            
                64.50
             |                     
            
                1.15
             |                                 
            
                10,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/8/2008
             | 
            
                +1.50 / +2.44%
             |             
            
                63.00
             |           
            
                63.00
             |               
            
                62.00
             |                           
            
                63.00
             | 
            
                63.00
             |                     
            
                1.12
             |                                 
            
                84,620
             |            
            
                 
             |                                       
         
    
        
            | 
                8/7/2008
             | 
            
                +1.00 / +1.65%
             |             
            
                62.00
             |           
            
                62.00
             |               
            
                61.50
             |                           
            
                61.50
             | 
            
                61.50
             |                     
            
                1.09
             |                                 
            
                57,390
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/6/2008
             | 
            
                -0.50 / -0.82%
             |             
            
                60.50
             |           
            
                60.50
             |               
            
                60.50
             |                           
            
                60.50
             | 
            
                60.50
             |                     
            
                1.08
             |                                 
            
                49,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/5/2008
             | 
            
                -1.50 / -2.40%
             |             
            
                61.00
             |           
            
                61.50
             |               
            
                61.00
             |                           
            
                61.00
             | 
            
                61.00
             |                     
            
                1.05
             |                                 
            
                142,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/4/2008
             | 
            
                0.00 / 0.00%
             |             
            
                64.00
             |           
            
                64.00
             |               
            
                61.00
             |                           
            
                62.50
             | 
            
                62.50
             |                     
            
                1.08
             |                                 
            
                147,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/1/2008
             | 
            
                +1.50 / +2.46%
             |             
            
                62.50
             |           
            
                62.50
             |               
            
                62.50
             |                           
            
                62.50
             | 
            
                62.50
             |                     
            
                1.08
             |                                 
            
                35,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/31/2008
             | 
            
                +1.50 / +2.52%
             |             
            
                61.00
             |           
            
                61.00
             |               
            
                60.00
             |                           
            
                61.00
             | 
            
                61.00
             |                     
            
                1.05
             |                                 
            
                118,550
             |            
            
                 
             |                                       
         
    
        
            | 
                7/30/2008
             | 
            
                +1.50 / +2.59%
             |             
            
                59.50
             |           
            
                59.50
             |               
            
                58.00
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                1.02
             |                                 
            
                118,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/29/2008
             | 
            
                +1.50 / +2.65%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                58.00
             |                           
            
                58.00
             | 
            
                58.00
             |                     
            
                1.00
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/28/2008
             | 
            
                +1.50 / +2.73%
             |             
            
                56.50
             |           
            
                56.50
             |               
            
                56.50
             |                           
            
                56.50
             | 
            
                56.50
             |                     
            
                0.97
             |                                 
            
                8,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/25/2008
             | 
            
                +1.50 / +2.80%
             |             
            
                55.00
             |           
            
                55.00
             |               
            
                53.50
             |                           
            
                55.00
             | 
            
                55.00
             |                     
            
                0.95
             |                                 
            
                131,290
             |            
            
                 
             |                                       
         
    
        
            | 
                7/24/2008
             | 
            
                -1.50 / -2.73%
             |             
            
                54.00
             |           
            
                56.50
             |               
            
                53.50
             |                           
            
                53.50
             | 
            
                53.50
             |                     
            
                0.92
             |                                 
            
                215,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/23/2008
             | 
            
                -1.50 / -2.65%
             |             
            
                55.00
             |           
            
                55.00
             |               
            
                55.00
             |                           
            
                55.00
             | 
            
                55.00
             |                     
            
                0.95
             |                                 
            
                7,920
             |            
            
                 
             |                                       
         
    
        
            | 
                7/22/2008
             | 
            
                -1.50 / -2.59%
             |             
            
                56.50
             |           
            
                56.50
             |               
            
                56.50
             |                           
            
                56.50
             | 
            
                56.50
             |                     
            
                0.97
             |                                 
            
                22,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/21/2008
             | 
            
                -1.50 / -2.52%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                58.00
             |                           
            
                58.00
             | 
            
                58.00
             |                     
            
                1.00
             |                                 
            
                35,330
             |            
            
                 
             |                                       
         
    
        
            | 
                7/18/2008
             | 
            
                +1.50 / +2.59%
             |             
            
                56.50
             |           
            
                59.50
             |               
            
                56.50
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                1.02
             |                                 
            
                127,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/17/2008
             | 
            
                +1.50 / +2.65%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                58.00
             |                           
            
                58.00
             | 
            
                58.00
             |                     
            
                1.00
             |                                 
            
                8,760
             |            
            
                 
             |                                       
         
    
        
            | 
                7/16/2008
             | 
            
                +1.50 / +2.73%
             |             
            
                56.50
             |           
            
                56.50
             |               
            
                56.50
             |                           
            
                56.50
             | 
            
                56.50
             |                     
            
                0.97
             |                                 
            
                50,970
             |  
            
                 
             |                                                              
             
    
         
    
    
 |