Yes, everything will be fixed... You'll lose any files you had though, unless you back them up somehow. All you need to do is reformat the hard drive, which wipes everything off it and gives windows xp a clean slate to start off of. It asks you to do that during the windows xp install, it's not hard at all.

You could buy a new computer for vista, if you want to. I don't know what Vista could offer you that xp couldn't, though, other than looking pretty.

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