I didn't play multyplayer call of duty about key code

I have a problem when i want to join the some server....on internet...cod 4 starts the connection but he displays ,,sorry key code in use,, help me please.....

I think you need the game multiplayer key code. You have to put it in your game so you can join any lan servers.

You can change your code key in the reg file in your game just open it with notepad at the bottom you'll see code key just change that it's 20 number and letters then just goto file click save then double click the reg file hit ok and your done. If you still can't get a Lan game going then goto your regedit file after doing the reg look for the game in software you'll see it there under Activision click on that file then click on COD4 to your right you'll see codkey click on that put in your new key close and start the game it's that easy I have 5 computers in my house with the game one acting as the server the others we lan on works great. If lets say you have a friend that let you use the game but you don't have a key look around or go buy your own game with one ethier type of key will let you play on lan if you don't have a "good key". hehe, then most likely no your not going to internet But you can start a server. Also to answer the Question about the can't see my server? Check your Network places look in your firewall settings make sure you have the game unblocked and listed there if not jus add the game exe. Good hunting and I hope this help those with problems.

i just want to get online with my fraviot cuz and we wont to both go on deth match agent pepole online andi carnt plzzz help and tell me online on ps3 and mi name is kb356 and jus add mi if u want lol !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!­!!

Now that helped much -_-" Plz dont fk dude above ...

Now I have the problem too: I reinstalled CoD 4, My LAN works fine ( I can play WoW and Internet ), My KeyCode is damn right, But still I cant find a fking server. With CoD 5 I got the same fking problem

ITS ANNOYING

:) Plz help us, we're desperate (: