Help with cod4 (pc)

ok so i installed cod4 on my computer yesterday. it works fine. The singleplayer is fun but i cant play multiplayer. like when i click on the multiplayer screen it doesnt show any servers. and ive made sure my firewall isnt blocking it. Is there something else i need to do in order to play online. oh i dont know if this is of any help but in the bottom right side on the cod4 menu is say something like 1.045. what does that mean? please help i want to play online and kick some ass so bad.

That's the version of CoD you have running. Try updating it. I think the version right now is 1.2.

If that doesn't work, the people at the PC board or CoD4 board would help you better than here.

then what forum?Josh_1160