I just received what you see below from McAfee. If you do not already have virus protection software you need to get it NOW! If you do have it then make sure you update it NOW! Otherwise you'll just be using your computer for a door stop. Andy - Las Vegas

Reminiscent of last summer's Lovsan/MS Blaster worm, W32/Sasser.worm.a and W32/Sasser.worm.b are Medium Risk Internet worms that exploit a vulnerability in the Microsoft Windows operating system, especially 2000 and XP.

You do not need to click anything to become infected. Unlike typical viruses that arrive inside email attachments, Sasser worms and their variants attack vulnerable computers when they connect to the Internet. Infected PCs will repeatedly reboot and help spread the self-executing worms to other computers.

Up-to-date McAfee VirusScan users with dat 4356 are protected from this threat. We also recommend fortifying your anti-virus software with a firewall. Together, they provide multi-layered protection against inbound and outbound malicious code.