I've the same problem when i click on a window of IE is open on "VirusBursters" sites:?:
you dont need a virus scanner, you need to use a "spyware remover" - download microsofts new windows defender from thier site (free) and do a full scan and see what it says
Also download "hijackthis" and post the log file to this thread
If you default webpage is being hijacked..... RIGHT CLICK on your desktop click on Properties then Desktop then Web and Delete anything other than My Current Home Page
Then ok and ok and restart
when i click on a window of IE is open on "VirusBursters" sites:?:
The VirusBursters infection is one of Smitfraud family of "rogue" antispyware product parasites. Removal instructions can be found here.