If you use Intenet Explorer... I recommend Maxthon -- not just a blocker but a great add-on browser. It utilizes IE as it's base-- but includes built-in Tabbed Browsing/Ad-Blocker with easy access to the controls/skinnable/RSS reader and much more.

I've used it for years now-- it has all you need built-in --with a simple/fast install

http://www.maxthon.com/index.htm

Thanx, but I'm looking for one for IE.

Maxthon IS for IE-- but whatever you want--

I used to use FreeSurfer Companion

http://www.kolumbus.fi/eero.muhonen/FS/

Maxthon is a browser?

Have a look here:

http://www.pchelpforum.com/tutorials...addresses.html

You can manually add any adserver to it, and no need for any extra programs running.

You can say that Maxthon is an add-on for Internet Explorer. You can read more at the link ih8bills provided.