It's a virus. There's some info here
http://www.gnutellaforums.com/showth...threadid=39612
and see point 4 here
http://www.gnutellaforums.com/showth...threadid=41432
Within that second thread is a lot of advice & info about virus problems. Also a link to norbiesworld. If you go to his site & register, he will help you to get rid of the virus. Make sure that you have a good AV program & keep it updated. Scan a file before you open it