I have a Windows XP Media Center Edition 2002 Desktop computer. I am attempting to join this computer to the a windows 2000 domain. When I go to "" and head to the "computer name" tab and click "change" the "Domain:" button is grayed out. I am logged on as administrator and have verified that the local administrator account has all the rights needed to join the computer to a domain. I know XP home can not join a domain, maybe this is the same thing?