My app uses advapi32.dll to look up valid email accounts on the exchange server. When we moved from WinNt 4.0 and office 97 to Win2K and office XP users experienced automation errors when they ran the app. What I found was that advapi32.dll references gapi32.dll which is no longer stored in the system32 directory. Ok, what's my question? Does anyone know if copying this file to the system32 dir will cause harm to anything else?