Don't remember which one but I believe you've been infected by a worm.

You have the Gaobot worm.  time to get some antivirus protection on your
computer.

Bobby

Greetings --

   The type of behavior you describe is typical behavior of more than
one virus/worm, the three below being the most common:

W32.Klez
http://securityresponse.symantec.com/avcenter/venc/data/w32.klez.e@mm.html

W32.Yaha
http://securityresponse.symantec.com/avcenter/venc/data/w32.yaha.c@mm.html

W32.Spybot.Worm
http://securityresponse.symantec.com/avcenter/venc/data/w32.spybot.worm.html

   Because many of the newer viruses and worms, such as the
Spybot mentioned above, can disable antivirus applications whose
definitions aren't kept up-to-date, try using one or more of the free
on-line scanners to double-check your system.

Trend Micro - Free online virus Scan
http://housecall.trendmicro.com/

McAfee Security - FreeScan
http://www.mcafee.com/myapps/mfs/default.asp

Symantec Security Check
http://security.symantec.com/ssc/home.asp

Panda ActiveScan - Free online scanner
http://www.pandasoftware.com/activescan/com/activescan_principal.htm

Bruce Chambers