Id highly recommend using this : http://www.ubcd4win.com/index.htm
Its a boot cd for windows. Obviously this means youd have to burn the CD first (after downloading it!). The CD contains many apps to help you get windows back up and running including virus and malware apps. After youve got rid of those it recommend booting into windows normally and trying to get rid of everything from there. And obviously install some sort of protection for the future!
If your on a mac or linux then i really do not know how you managed to get a virus and am unaware of any resources for this at this present time!
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Once a Red Bar, Always a Red Bar... Points are for lossers :)