LimeWire just lets you share files. It's up to the user to be careful when downloading!! Make sure your AV programs are up to date & always scan a file before you open it. The world of p2p is full of malware, you have to be aware of that. Here's a lot of info on virus problems
http://www.gnutellaforums.com/showth...threadid=41432

Within that thread is a link to norbiesworld. If you go & register (it's free), he'll be able to help you get rid of your virus.