Description: Pop-Up Stopper provides pop-up and pop-under ad blocking. Pop-Up Stopper runs in the system tray next to your clock for instant access. Simply right-click on the white hand and you will be presented with the menu. From this menu you may access the preferences, monitor your Privacy Report and identity theft risk assessment, check for product updates and more!
Also, google toolbar does it as well as add a search engine to your browser.
Mozill, Firefox, netscape and opera all have built in popup stoppers.