How to add key code..

Hi guys...
Most common issue in cod4 is the Key Code problem..A key code must be applied if you are playing multiplayer game.If you try to join a game without this key code,you will not be able to connect to the server and it will display you a error..

So to fix this issue follow these steps...
Lets start..

• Open the game..Go to game folder and click "iw3mp"(This opens the multiplayer game)

• Then from the game menu go to Options..

• Select Multiplayer Options..

• There you can see several important options..
• Punkbuster-Make it yes.Because if the server you are going to join have allowed punkbuster and you are not,you will be kicked from that romm.so make it yes all the time.
• Allow Downloading-Make this yes.When you are joining to a server some modes which are not in your game will be downloaded(Once downloaded no need to download it again).
• Player Name-You can enter a name.

           Click on Enter Key Code..

• You will have to enter a key code here..

Dont Have a key code??

Get it here-****Click here****

(This is a video.Pause the video and note down a random key code)

• Now add a key code and click on Verify..

• If the key code you entered is a valid key code(sometimes you will miss spell when you enter it)then you can see the following message..

• If it is wrong you will see the following message and then you will have to check the key code or enter another code(In this case I have change the last letter of the code)

• Then you are done with the key code and you can close it..

Hang on with the next..It will be about "How to connect to a online game"