We are preparing to move to w2k. Currently all of our servers except the pdc/bdcs and one member server are on windows 2000. The member server is nt 4 sp6a, running exchange 5.5 sp4. The plan is to move to a new w2k domain with new dc, importing the users, and then moving all the w2k member servers. What is the best way to do exchange? Should I create an nt4 server in the current domain, install 5.5, synch them up, then move the new exchange server to the new w2k domain? Then upgrade to w2k and then to exchange 2k? Or should I put a w2k member server in the current domain, put exchange 5.5 on it, then synch the servers and then move to the new domain and then upgrade to w2k? Or should I start the new nt4 or w2k server in the new domain, connect to the old one, then upgrade to exchange 2k? Which method would be best and how would it be done? Thanks for all help!