That royally sucks hon.
Me and my techie other half both recommend Trend PC-Cillin. It's got a great firewall/security suite as well and the price is reasonable. It's one of the top anti-virus/firewalls/anti-spyware you can use and it's anti-phishing is fantastic.
AVG is all right; the free version doesn't allow upgrades. In my techie news, I've heard that AVG is ending their free program and charging minimally instead.
Stay away from McAfee and Norton. Besides screwing with your operating system, Norton is often unable to prevent/fix virus and worm attacks. McAfee as well is often targeted by the worms as well, rendering the program ineffective.
Despite that for all of our computers here at home (we have SIX! eeps), we have the best firewall ever; Novell, additionally I still run Zone Alarms if I'm going to do some browsing into unknown territory, and have both AdAware and SpyBot running (each will catch different spyware).
A lot of very hard work goes into designing programs; I don't recommend cheating to get the full versions. Pay the small fee; the author of the program deserves compensation.
~talena {MTC}