>I'm working on a grid.. in one column, I would like to allow users to either enter the code or press F2 for them to choose from the library. Then the corresponding code description should appear on column 2 of my grid.
>
>How can I do this?

By using Replace (or Update) with the grid.RecordSource alias:

Replace theOtherField With yourValue In theAlias

hth
-Stefan