change the screen format of RF transaction LM00

Hi,

I want to change the screen format of RF transaction LM00.

I have already gone through the procedure in sap notes( with the help of user exits)

But I find hard when i try to implement it using exits.

Can any one help me with any other procedure.

Please help me with the complete procedure(steps) Bcos I am new to the RF Issues.

Thanks &

Kind regards

IN ADVANCE

Vamsi.