Need help - Please suggest

Hi Guru's,

I have a table T1 with fields A,B,C,D,E,F. A and B are key fields.I have table maintanace for this through which I can change values of C,D,E,F.

Requirement..

I do not want to use the table maintanace instead i need to pass A,B in selection screen and after execution I should be able to modify,update and delete C,D,E fields as I do in table maintanance.

Please suggest if there is any function module or somethin to handle this instead of SM30.

Thanks..........