ERD Commander 2005 is a very POWERFUL software that will allow you to delete what ever you want off your computer.....
http://www.winternals.com/products/r...very/index.asp
This software runs off the CD and it has a simulated XP GUI interface, basically after booting up you can access your hard drive and modify what ever you want.
Cheers
P.S: I can't emphasize enough about power of this software