if all you are getting is a request to install Winativirus2008 to check your computer you aren't infected yet. just Alt-F4 the pop-up, and you should be good to go.
If you think you are infected, here is a link that provides a tool, and manual instructions for removing the virus http://www.removeonline.com/remove-winantivirus2008-org-winantivirus2008-removal-instructions/
Also, if you see that pop-up, please (after confirming you don't have a virus and vgchartz is responsible for the pop-up) pm ioi and let him know which ads and where on the page were displayed on this site at the time of the pop-up. Also, include your country, or he really can't do anything at all, since they are region based.








