Virtualization as an Antivirus
Jonathan Rentzsch’s antivirus utility of choice is Virtual PC:
Only the disposable images are allowed to play on the Net. Even if/when they get compromised, they don’t last long — I shutdown the image and use Undo Disks to throw away whatever changes they’ve made. Thus pretty much every time I use IE6, I’m using it from a “fresh”, untainted XP install, regardless of what malware snuck in the last session.