I have a Windows 2000 server network with about 70 users. Somehow file attributes are being changed to hidden. I have asked the users of these files if they changed them and receive no answers. The files being changed are mainly ".xls" and ".mdb". This wasn't much of a problem except now I am having folder attributes on the user desktop being changed also. These contain shortcuts that the users log into. If it is one of my users how do I determine which one, I don't have unique logins for all users most use either "station" or "agent". All of the machines do have unique names.