I explained in the other thread that the Klez self replicates. Anyone in bebops address book could be targeted.
The first thing it does is make sure it self starts every time with windows, then attempts to remove start up keys and database entries in anti virus products.
It then searches for email addresses to send itself to, and chooses random email addresses in the address book to put in the 'from' field to confuse you it came from somewhere else. It chooses random attachment files and messages to mask the virus attachment.
A quote from a symantec virus report:
"Because this worm uses a randomly chosen address that it finds on an infected computer as the "From:" address, numerous cases have been reported in which users of uninfected computers received complaints that they sent an infected message to someone else."
so it could be going around for a while yet!
I gave instructions in
http://www.synthzone.com/ubbs/Forum25/HTML/000680.html how to get rid of it for sure.