1. You can install a free antivirus software. Maybe both AVG and Avast are good.
2. You can remove the virus by yourself. What you need is some basic computer knowledge and make good use of google search. :0) Then, you can remove the virus manually. Here is a very good article on how to remove computer virus manually and automatically.
http://ezinearticles.com/?Computer-Virus-Removal---How-to-Remove-Computer-Virus-Manually-and-Automatically&id=3458652
PS: Maybe a paid antivirus software is better and more effective on protecting your PC. You can FREE DOWNLOAD a good spyware scanner here http://www.bestspywarescanner.net/.
Cathine
December 2009