punk buster

hi guys. i got cod4 yesterday, and updated it to 1.3 and all of that, but now when i turn on the game it says Error unable it initilize punk buster, punk buster is disabled. So whn i go to multiplayer options, and enable, nothing happens. I only can play in like 20 servers, that are mostly emty because of this

can someone help?

you may have to manually update PB

should you ever need to manually update your PB for any reason because you're gettin kicked from servers instructions and info about the latest updates can be found here!

thank you.