Please close RogueKiller.
I need some more information at this point:
1. Are other computers using the router experiencing redirects as well?
2. How long have you been suffering the redirects, do you have an approximate date when they started?
3. Are redirects evident in all browsers (IE, Firefox and Chrome)?
4. Please tell me if you have your original Windows XP Professional SP3 CD/DVD available.
5. Is this laptop or desktop?