i actually exploited that security hole at my high school...i was on a computer messing with the dif net commands. so i uploaded a virus from home that nite and brought it to school...i logged on and opened the prompt and piped the a: drive that the virus was on and used the net send command and added a /username of another hacker in my school that i didnt like..the worm attached itself to the message that said HI and was transfered to every computer on the network. he got expelled cause it caused so much havoc.