1. Boot to Safe Mode.
2. Login.
3. Goto C:\Documents and Settings
4. Right click on the user that was infected.
5. Click on Security Tab
6. Click on Advance
7. Then under the owner tab, click on the one that has your username.
8. Also click on that little tick box at the bottom of the window. (can't remember what it said, but there's only one tick box)
9. Click ok, including the popup it will give you after you clicked ok.
10. Wait, and done.