ALV Grid - Create new entries / change existing entries

Hi,

I have to write 3 reports, one for creating entries in a database, one for changing existing entries and one for only displaying.

The screen for inserting new entries should show the last 9 entries in an ALV grid controll, and below a line for insert or another grid for making the new entries.

The screen for editing should give some selection criteria and should show then the results and make them editable.

The last screen for displaying should give some selection criteria and should only show the found lines.

Now my problem. I have tried to make all this on a 4.7 system. I´m quite new in ALV programming, but I have got the alv-displaying data and have found the possibility to make columns editable (with the structure LVC_S_FCAT and the field EDIT).

But now, I have to do all this on a 4.6B system and there is no field "EDIT" in the "LVC_S_FCAT" structure, which I can give to the method "SET_TABLE_FOR_FIRST_DISPLAY".

Can anybody help me out of trouble? Does anybody know how to make fields editable and how to handle that in a 4.6B system?

Thank You very much!