Somehow a downloader virus made it's way onto my system while I was at a keenspot webcomic and though I cleaned out all infections via AVG, it must have put something on my computer which causes a pop up window to occur after a certain length of time (I do not know the exact amount of time it takes to respawn) from a www.paypopup.com
website which is black save for the words "no ads". The first pop up I recieved was of this: http://www.yesadvertising.com/click.x.php?aid=spyblocs2&at=0&du=http://22.214.171.124/spyblocs/adv/paypop1.html
I have run CWshredder, ad-aware, avg and hijack this to see if I can find anything related to either of these websites to no avail. If anyone has any suggestions of what I need to do to get rid of this problem, I'd be grateful.