Here's the situation: my company has been running off of a NT 4.0 domain for as long as I've been with the company. It's been around for years and years (before win2k) and no one has ever gotten around to upgrading the actual software, because we're a small company and it has never really mattered that much. The current setup is this: 1 primary domain controller running NT4 server, 2 backup domain controllers running NT4 server. The computers are getting ancient, and we want to upgrade. We got a super spiffy fast computer and a copy of Win2K server. What we're looking to do is mothball the three old computers and just use the single good computer as the new domain controller. We have no problems moving the data on the drives to the new computer. The issue is that we want to make the transition as seemless as possible, for both the server side and the client side. For the server, we need to transfer all of the user info from the existing domain to the new win2k server, but we don't know how to do this.. is there a url that will explain how to do this? are there any gotchas we should know before transferring? For the clients, we want to do as little configuration as possible. can we just make the new server use the same domain name as the old one, and all the clients will magically connect to it?