Hi Daniel,
Is it possible that your grid is intercepting your keypress event? Also, do you have more than one control dropped in that column... if so is the proper one listed in the columns currentControl property?
These are just a few things that came to mind I would check. Hope it helps lead you to success!!
Paul A. Busbey
I.S. Department
Sparagowski & Associates
Paul A. Busbey
Victoria Insurance