Online CD key problems!

[CoolAlex]

I just want to know if there are ways to play online RTCW, Battlefield 1942 , SOF 2 ... because when I connect to a server they all give me "INVALID CD KEY" !But in MOHAA it all works ok...
Just want to know if theres a way to play one of this games online...
Thnx

[JoyBoy]

Dont share CD Keys. Or rather, dont download bins.

Nevermind......

[Syris]

mohaa doesn't check cd keys online
all it does is if you have a valid key while installing thats good enough

all those other games you need a valid + unused cd key 2 play online

lol sukcer