I recently reloaded Windows XP Media Center Edition 2005 to Windows XP SP2, so I could join it to a domain. This was before I realized that XP Media Center 2005 could be joined to a domain! Grr!! Much time wasted and a somewhat unhappy customer seeing as people don't like change... I wish I had run across this article sooner!
I give all credit to the author (whomever that may be...) but wanted to keep track of it for my own personal record keeping.