I viewed this thread originally because I have a similar situation to gman. I believe that one option, if you choose to keep an NT 4 domain and a SBS 2003 AD implementation seperate, is to use XP stored passwords (rundll32.exe keymgr.dll,KRShowKeyMgr) to setup account names and passwords for multiple domains. In my case, the NT 4 domain will be temporary, nonetheless, I need to make it easy for users in the interim.