combo box use in data grid view in csharp winodws applicatio

Question

 Design as follows;


Date       Session                VB                                         GS    CMK     CKK     BANS

18/6/2012    1             combo box(All Course name)                               
                    2                                
                    3                                            


in that design when i press enter key in the keyboard that combo box will go to GS column.how to do.

output screen  in the run mode as  follows;


Date          Session           VB                GS                                           CMK     CKK     BANS

18/6/2012    1                          combo box(All Course name)                    
                    2                                
                    3
 

 how to do using c sharp.please send the code.