If you have something like the 360, or the PS3, you can't.
Even if you could, you would never be allowed to play multiplayer. They probably made the upgrades to prevent the airdrop glitch, and so on.
Yes
Yes, there is online multiplayer on Call of Duty 4: Modern Warfare.
in my opinion,modern warfare 2 multiplayer is way better,better graphics,spec ops ,and more ranks to show off
U go to multiplayer if no multiplayer u beat
Yesh Mkay!
No
Yes there is a Squad mate mode which is offline multiplayer.
no but black ops does
yes
It was revealed in a gameplay video that Modern Warfare will have a Capture the Flag game mode for multiplayer
More guns. It continues the storyline from modern warfare 2. For multiplayer, there will be more perks and killstreaks and weapons. Also for multiplayer there will be more maps.
There are a total of 70 levels (ranks) in Modern Warfare 2 Multiplayer.