FBW, I bet it's the "coolsite"
js worm. If you use MSIE did it change your start page to a porn site?
If so then it is nondestructive malware and ridding yourself of the file and changing your MSIE start page cures everything. However, you should correct your system to avoid further expolits.
<a href="http://securityresponse.symantec.com/avcenter/venc/data/
js.exception.exploit.html" target="_blank">http://securityresponse.symantec.com/avcenter/venc/data/
js.exception.exploit.html</a>