You mean you got a virus using Limewire.

I think people have been getting good results removing at least variants of that virus using the AVG free Antivirus, so maybe try that. Boot in safe mode, run it, and then turn off and back on system restore. If that doesn't work then we need to move to more advanced tactics.

Pretty late, but be careful what you download. Always scan before opening and stay away from zip and exe files.