All right, it is easily to get infected while downloading from internet. If you do it a lot, you not only need to get rid of this virus for now, but also you need real-time protection whenever you get online. So you should check out here to search for the best security program for you !
http://ezinearticles.com/?How-to-Secure-Your-PC-Effectively---You-Just-Need-One-Minute-Computer-Knowledge&id=3599864
Kate
January 2010