| 
                 
                    Closing price on 1/29/2007
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    80.00 | 
                 
                
                    | High | 
                    82.00 | 
                 
                
                    | Low | 
                    79.00 | 
                     
                
                    | Volume | 
                    6,800 | 
                                 
                
                    | Split-adjusted Price | 
                    4.04 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NBC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/29/2007
             | 
            
                -1.00 / -1.20%
             |             
            
                80.00
             |           
            
                82.00
             |               
            
                79.00
             |                           
            
                82.00
             | 
            
                82.00
             |                     
            
                4.04
             |                                 
            
                6,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/26/2007
             | 
            
                +2.00 / +2.47%
             |             
            
                82.40
             |           
            
                84.00
             |               
            
                78.00
             |                           
            
                83.00
             | 
            
                83.00
             |                     
            
                4.09
             |                                 
            
                11,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/25/2007
             | 
            
                -6.00 / -6.90%
             |             
            
                83.90
             |           
            
                88.00
             |               
            
                80.80
             |                           
            
                81.00
             | 
            
                81.00
             |                     
            
                3.99
             |                                 
            
                11,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/24/2007
             | 
            
                -5.00 / -5.43%
             |             
            
                89.60
             |           
            
                92.00
             |               
            
                87.00
             |                           
            
                87.00
             | 
            
                87.00
             |                     
            
                4.29
             |                                 
            
                11,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/23/2007
             | 
            
                -4.00 / -4.17%
             |             
            
                92.40
             |           
            
                94.00
             |               
            
                90.10
             |                           
            
                92.00
             | 
            
                92.00
             |                     
            
                4.54
             |                                 
            
                2,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/22/2007
             | 
            
                -4.00 / -4.00%
             |             
            
                98.80
             |           
            
                102.00
             |               
            
                96.00
             |                           
            
                96.00
             | 
            
                96.00
             |                     
            
                4.73
             |                                 
            
                4,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/19/2007
             | 
            
                +1.10 / +1.11%
             |             
            
                98.80
             |           
            
                102.00
             |               
            
                90.00
             |                           
            
                100.00
             | 
            
                100.00
             |                     
            
                4.93
             |                                 
            
                16,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2007
             | 
            
                -4.10 / -3.98%
             |             
            
                98.90
             |           
            
                100.00
             |               
            
                98.90
             |                           
            
                98.90
             | 
            
                98.90
             |                     
            
                4.88
             |                                 
            
                4,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2007
             | 
            
                +0.40 / +0.39%
             |             
            
                103.00
             |           
            
                112.60
             |               
            
                103.00
             |                           
            
                103.00
             | 
            
                103.00
             |                     
            
                5.08
             |                                 
            
                17,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/16/2007
             | 
            
                +9.30 / +9.97%
             |             
            
                102.00
             |           
            
                102.60
             |               
            
                102.00
             |                           
            
                102.60
             | 
            
                102.60
             |                     
            
                5.06
             |                                 
            
                4,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/15/2007
             | 
            
                +8.40 / +9.89%
             |             
            
                93.30
             |           
            
                93.30
             |               
            
                93.30
             |                           
            
                93.30
             | 
            
                93.30
             |                     
            
                4.60
             |                                 
            
                5,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/12/2007
             | 
            
                +7.70 / +9.97%
             |             
            
                84.50
             |           
            
                84.90
             |               
            
                84.50
             |                           
            
                84.90
             | 
            
                84.90
             |                     
            
                4.19
             |                                 
            
                4,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/11/2007
             | 
            
                +7.00 / +9.97%
             |             
            
                77.20
             |           
            
                77.20
             |               
            
                77.20
             |                           
            
                77.20
             | 
            
                77.20
             |                     
            
                3.81
             |                                 
            
                800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/10/2007
             | 
            
                +6.30 / +9.86%
             |             
            
                70.20
             |           
            
                70.20
             |               
            
                70.20
             |                           
            
                70.20
             | 
            
                70.20
             |                     
            
                3.46
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/9/2007
             | 
            
                +5.80 / +9.98%
             |             
            
                63.90
             |           
            
                63.90
             |               
            
                63.90
             |                           
            
                63.90
             | 
            
                63.90
             |                     
            
                3.15
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/8/2007
             | 
            
                +5.20 / +9.83%
             |             
            
                58.10
             |           
            
                58.10
             |               
            
                58.10
             |                           
            
                58.10
             | 
            
                58.10
             |                     
            
                2.87
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/5/2007
             | 
            
                +4.80 / +9.98%
             |             
            
                52.90
             |           
            
                52.90
             |               
            
                52.90
             |                           
            
                52.90
             | 
            
                52.90
             |                     
            
                2.61
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/4/2007
             | 
            
                +4.30 / +9.82%
             |             
            
                48.10
             |           
            
                48.10
             |               
            
                48.10
             |                           
            
                48.10
             | 
            
                48.10
             |                     
            
                2.37
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/3/2007
             | 
            
                +3.90 / +9.77%
             |             
            
                43.80
             |           
            
                43.80
             |               
            
                43.80
             |                           
            
                43.80
             | 
            
                43.80
             |                     
            
                2.16
             |                                 
            
                10,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/2/2007
             | 
            
                +3.60 / +9.92%
             |             
            
                39.90
             |           
            
                39.90
             |               
            
                39.90
             |                           
            
                39.90
             | 
            
                39.90
             |                     
            
                1.97
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/29/2006
             | 
            
                0.00 / 0.00%
             |             
            
                36.30
             |           
            
                36.30
             |               
            
                36.30
             |                           
            
                36.30
             | 
            
                36.30
             |                     
            
                1.79
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                12/28/2006
             | 
            
                -0.70 / -1.89%
             |             
            
                36.30
             |           
            
                36.30
             |               
            
                36.30
             |                           
            
                36.30
             | 
            
                36.30
             |                     
            
                1.79
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/27/2006
             | 
            
                +37.00 / +0.00%
             |             
            
                36.00
             |           
            
                37.00
             |               
            
                36.00
             |                           
            
                37.00
             | 
            
                37.00
             |                     
            
                1.82
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
         
    
    
 |