I have a Windows 2000 Server Standard Edition server (that's right, standard) on a home network with three systems doing basic file/print sharing (and a few other services). Until recently the systems were running XP Home, but I now have them updated to either XP Pro or Vista Ultimate. I also have a Server 2000 Advanced product key + license that I acquired at the same time as the Standard license.
Now that every machine on the network will support being joined to a domain I would like to update the server to Advanced with Active Directory. Can I do this in place, or do I need to re-install from scratch? What do I need to know to get Active Directory set up?