A puzzling question: I recently upgraded my WinNT 4 domain to Win2000. The upgrade was successful and I currently have a mixed mode network with two W2K DC’s and a WinNT BDC. I have WinNT, Win98 and W2K clients. DNS appears to be functioning properly and records are being dynamically updated OK. I have WINS and DHCP running. The Prior NT Domain name was/is a three letter name: XXX. The W2K domain name is: xxxxxxxx.com. The pre-W2K computers log on fine using old domain name XXX. The W2K logon fine too, using old domain name XXX. Should’nt the W2k Machines logon with xxxxxxxx.com at the logon screen? I try to “rejoin” these W2K machines to the the xxxxxxxx.com domain, but it defaults back to the old XXX domain name. Network Name informationreports domain as xxxxxxxx.com, but logon screen still is XXX.