[AccessD] A2k on W2k vs A2k on WinXP

We install on one computer this week WinXP with Office XP dev. Ed
On some application we discover that if we open and run we can't modify
anything this only occur on WinXP same process on Win2k Access permit to us
modify and save without problem.
We try to make some changes before run the application and this is ok, and
run Swichtboard only and run OK, but if we execute a simple query opening
and writing over this application (any table) then we can't do changes.

Why? Why Win2k permit to do this and WinXP not??

Thanks for any ideas


Juan