Aye Hersh!
Hmm... Registry Editing is a way to go... but you should become farmilliar with a non-boofed registry before attempting to even view or edit a boofed one...
DO you have registry experience?
If you do... you should go to "run" in the start menu and then "regedit.exe" in to the command box.
It opens up a program that displays the contents of your windows system registry.
BE VERY CAREFULL while editing anything in there. If you are unsire if part of the registry is not to be deleted, then make sure you select that part and choose under the "Registry" menu "Export Registry File" and save it some place where you can easily find and double-click it later (to restore it).
I suggest not removing more than 1 type of regitry entry at a time.. ie; if you have installed the Google toolbar, there will be several "Google" registry entries in serveral places (all in folders called "software") check all the sub-follder icons of the Google icon and then once you have determined them to be the same, Export & then '86 'em.
If your computer gets whacked it's not my fault. This is a warning to not mess with the registry unless you can afford to possibly thrash your OS and possibly require a re-install, reg-repair, or format.
Goodluck, and be VERY CAREFULL.