Block all of the pop-up ads you receive from spyware and adware as well as general net surfing. Once downloaded you can stop pop-ups or enable them with just one click of the mouse on the icon at the bottom of your screen. This pop-up blocker stops all pop-ups from reaching you by stopping new instances of Internet explorer from opening. Very simple and powerful. Easily uninstalled just by right clicking on the icon and selecting uninstall.
I didn't really like it, it starts running when yoou load IE and blocks popups. I woul recomend using the google toolbar instead.
However, spywareblaster and spywareguard are great for blocking spyware
Coupled with ad-aware and spybot, I think that's the best protection you can get from malware, just remember to update and immunize with spybot, and scan at least once a month