I'll second (or is it third, or forth) the opinion that the Mozilla Firefox built in blocker is darn good. I would recommend you download the browser and come on over to the non-MSIE side.

MSIE in Windows XP service pack 2 blocks them pretty well.. and with the addition of the google toolbar (as FallenAngel5 suggested) it then works very well.

I still prefer Firefox.

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"It takes a lot of brains to enjoy satire, humor and wit - but none to be offended by them." -- Johnny Hart ("BC", cartoonist, 2000)
"Analyzing humor is like dissecting a frog: Nobody really enjoys it and the frog generally dies as a result." -- E. B. White