Hi, I downloaded a client's file db file to work on for him, I double clicked on the file to open it. Now, I get prompted for a user name 'mine" and password... I have never setup workgroup permissions on my system since i don't need it.. none of my files open without me getting propted... I renamed the sytem.mdw file to xsystem.mdw and now I can open my files... problem is that my version of access now says it is registered to his company??? I did not think that is what the system.mdw file did??? Any Suggestions?