Scott...

My blaster worm was first identified as an RPC System Shutdown. Don't know if it's what you have, but here are some sites that helped me first identify and then resolve my problem. Good luck.
http://www.techspot.com/vb/showthread.php?threadid=8147
http://www.microsoft.com/downloads/detai...&displaylang=en
http://home.westelcom.com/blaster_fix_letter.htm
http://www.modemhelp.net/
http://www.techsupportforums.com/showthr...46941#post46941