Could you be a little more specific. Like do you mean "Where the C:\ drive is listed" MS DOS? I know I'm talking old stuff but I would not begin to know where that would be. Could I tell the computer to boot from disk and let it do the rest or is it something more? Also if vista came on the computer is it as simple as you say to just buy Windows XP put it in and keep on keeping on? If you haven't guessed I really hate vista!!!