to be a little bit helpful, you could try to downlaod Avast Antivirus home edition.
this program is absolutely free and has protected all of my comouters since i baught them, it updates it virus database nearly every day, updates are very small (usually about 24KB).
after installing avast, run a boot scan and restart your machine. it will automatically remove all viruses it detects.
Also it has active protection from viruses so if you start your pc one day and you get all these virus popups, click move to chest its the fastest option and safest as you dont have to shut down just to delete viruses that wont terminate to avast'es commands
it comes with its own firewall, active program protection, e-mail protection, internet protection and lots more!
you can even scan your computer for hidden viruses using the normal scanner as well as the Avast On-Access scanner.