COD4 official multiplayer keygen??

Hello, i am wanting to play COD4 online with an friend that has the official version, now he will give me his CD's to install but i need a code to play multiplayer then. Is it possible to play on a official server with an keygen?

Thank you.

I dont saw any key-generators for cod4 ...
I think its possible

well i could be possible and there are keygens...
but almost all serial keys are in use, so the chance you have an working key code is extremely small :P

Now i have one cd-key gen but with these cd-keys i can play only on cracked servers ;(