>>Barbara,
>>
>>I prefer the valid solution. If you place a NODEFAULT in the LostFocus code, the field will never loose focus. At least, that's what I found with a combobox
>>
>It needs to be conditional of course (IF/CASE), but I find the Lostfocus to be more flexible than the Valid, and a bit more state-of-the-art...

Ah, Bruce, my answer in a nutshell. Particularly since MS has been threatening to remove Valid entirely.

Barbara