I read in an article this morning that the Sasser worm infects Windows 2000, XP and 2003 machines within 10 minutes of being connected to the Internet. It's not one of those worms that is activated just by clicking on an attachment. It can "probe" an un-patched machine and just infect it at will. Even if no one is using the computer. Wow! I'm using Windows 2000. Microsoft released the patch (MS04-011) on April 13. I received a notification of an "available" critical update on the 14th through Microsoft's automatic update program and I allowed Microsoft to install it for me. It's a habit I've been trying to stay in. Turns out, it's a good habit to be in. The patch eliminated the vulnerability. I started being more careful about patches after I came home from work one day and found the MSBLASTER virus on my system. That virus just found my un-patched system hanging on the Internet and made itself at home (what nerve)! So, Stay on top of those patches. Cheers, Dave.