I installed CoD4 today on my MBP and in multiplayer the internal mic for voice in the game does not seem to work. The COD4 server I play on uses the GSX codec on Vent (which I prefer for voice) but of course the Mac version doesnt support it (old story isnt it). The mic works fine for everything else including vent with the speedex codec, which is what the UT2004 server I play on uses. The voice meter in the game options screen doesnt register anything when I speak into the mic.. with or without the Z key pressed. Thus far its the only thing in the game I dont like except for jumpy framerates at times. But thats expected since the videocard is only 128MB.