For nearly 2 weeks, my system has been invaded by a site with the address of 69sexsearch.com. This page pops up whenever I close out a window from any other site. When this garbage opens, it will open between 30 and 50 windows in about 10 seconds. Whenever I close one out, 10 more will pop up. I have run ALL my spyware detectors, including Spybot, Ad-aware, Norton antivirus, Spyware Blaster, and Trojan Hunter. All systems have been updated. I have also entered this unwanted site in my restricted list of IE. I've also run Hijack This many times and deleted the suspicious files (the one in question never appears on the list). I am at my wit's end. I do not visit porn sites, but I suspect this page got in through something I clicked on not knowing the content.
Just short of doing a complete system destructive recovery, what else can I do?
Windows XP (ver. 1)