MCE 2005 is junk
Well, I just discovered that Windows Media Center Edition is total junk. You cannot join a domain with the new version, however you could with the 2004 edition. I’m not sure what Microsoft was thinking.
I wanted MCE2005 because they have a new cool think for Xbox that allows you to play media from MCE2005. Unfortunately you have to have 2005, 2004 won’t work. Microsoft also takes it upon themselves to only allow you to get MCE2005 if you get a new computer, however I have found ways around that