Is Windows XP Media Center Edition more like XP Home or XP Pro? I have a machine that I wanted to format and do a reinstall but I don't have a Windows XP Media Edition Cd. The product key is on the sticker on the side of the machine. I do have a XP Pro cd and a XP Home cd. Will one of these cd's work with the key that is on the sticker of the machine if I want to do a format and reinstall?