Looks like most of your IE Pages have been hijacked unless you set em to overture.com. It's not too bad really, the number thing I'd do is clean out your system with SpyBot S&D, Ad-Adaware SE, AVG Anti-Spyware, CounterSpy, Spyware Doctor, and Webroot SpySweeper and your AV. That should flush out most all malware, then switch to FireFox. Clearly you run IE. My suggestion is to switch to FireFox, it is far more secure than IE, it doesn't run activeX scripts by default, has a good built pop-up blocker, and has a zillion extensions providing virtually unlimited functionality. I suggest FireFox 1.5, but 2.0 will work as well. 1.5 is just more stable, secure, and faster than 2.0 imo. If you switch to FireFox, you should be able to chuck that pop-up blocker you use. You can get FireFox 2.0 anywhere, 1.5 can be found here:
http://rapidshare.com/files/30625638...p_1.5.0.11.exe