Multiplayer error?

H, whenever I try to play CoD4 multiplayer I get a kicked out of the game becuase it says : Request Something something: PnkBsterA.exe. I have a legit key and downloaderd form gamesplanet. Any help?

Download pbsetup -> PunkBuster Online Countermeasures

Add a game -> call of duty 4 -> check for updates

Ingame > Options > multiplayer options > Enable punkbuster

Enjoy

blubb you are always such a nice dude,ready to help.that is how more persons on mpgh should behave.

EDIT: H4X0R Member,woot woot!

I still get the same error. Here is a picture:
http://i40.tinypic.com/o6baix.png

Bump. Any help, please???