Another useful site is
http://www.f-prot.com/download/[/URL]
From here you can get a trial version of F-Prot for windows or, even better, a good prog to download and save to cd is F-Prot for dos. If windows becomes unusable due to a virus it can be cleaned up from the command (dos) prompt. Could be handy if using the internet without anti-virus software running. And its a freebee.