COD4 for legit CD-key

Hi,
I just obtained a legit CD-Key of Call of Duty : Modern Warfare. I wanted to know, where I can download the game so that I can use my key to play online. Will the versions you find in WBB(like Razor 1911) work with my legit CD-key?
Regards,
Answer #1
COD4 can go online on pirated server, you don’t need a legit key.
Answer #2
COD4 can go online on pirated server, you don't need a legit key.
Cracked server sucks. I need a legit key for the ‘real’ fun. Or am I wrong?
Answer #3
Is COD4 not on steam?
Answer #4
Just use the key on a steam account to activate it, then steam will allow you to download a retail copy of the game.
Answer #5
COD4 can go online on pirated server, you don't need a legit key.
Cracked server sucks. I need a legit key for the 'real' fun. Or am I wrong?
i have both and im still playing pirate servers its all fun 😛
OT: get the game of their site or download an iso and install with steam and register the game with the serial key