Call Of Duty 4 Multiplayer probs

Hi Thanks for checking. The problem is when I’m connecting to a server on cod4 to play multiplayer it says to enter a key code. I’m really confused with this when i did it i entered the server ip. Than when i click verify it doesn’t except it?
Does some one know what I’m on about here? If so please help Thanks
Answer #1
Are you trying to connect to one of the listed COD4 servers with a downloaded key mate? You cannot play online on the normal servers without a CD-Key that you bought. You can play cracked COD4 servers though. Search Google for them Good luck mate ^_^
Answer #2
I got a list of serves on forum.. weird anyways thanks alot for youyr help and making it so fast