We got hit by this on six of our machines last Friday. The only thing they had in common is that they were all upgraded from NT4.0 to 2000. It uses the Windows Messenger Service not MSN Messenger. We stopped it by opening the Services Manager and shutting down and disabling the messenger service. I am also asking the firewall guy to block all netbios/netbui ports.

I also would think that this would be illegal. The company that makes the software http://www.directadvertising.com claims it to be perfectly legal. Not in my eyes!

Stuart