If you get annoyed with pop-up ads and windows on your computer, you should try the new Google Toolbar 2.0. It has worked great for me. I have not had one pop-up ad make its way through since I installed it. Your cursor changes for a second and you hear a little click every time it kills a pop-up ad.

There are also a number of other useful features the toolbar has that would make it worthy to download on their own, but the free pop-up blocker makes it indispensable.

Just click on the link above, and then click the button at the bottom of the page. Very easy and quick.