As you have XP Pro, there is a little trick that will overcome that. Potentially dangerous in the hands of the computer illiterate, or those with ill intent. Public knowledge, and available on the 'net, but I'm not going to add another source here if I don't have to. It will get you logged on as SYSTEM, and you can do what you want. Preferably for good, not evil...
If the other methods posted don't work, let us know.
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