We are in the process of updating to windows 7 and office 2010 from windows xp office 2003. I have noticed an issue regarding a .mdb file that uses excel 2003 and an update query. If that database is migrated to 2010 (the .mdb extension is still used), the users that have updated can not save updates. However, the users that have not updated to windows 7 and office 2010 can save changes. Is this a common issue and will the database need to be redesigned in the newer (.accd extension i believe) in order to function properly? Thanks.