Next to your Gamertag or PSN name on the Multiplayer menu there should be an emblem with a number next to it.
In Call of Duty 4: Modern Warfare, the M14 rifle is unlocked at Level 46 in multiplayer.
Yes, you can level up online just like for the xbox 360, ps3 and computer. I know this for call of duty 4 and 5 for the wii but have never played call of duty 3 or prequals so don't know about them.
15+ i think
play day and nyt
Level 38, Lt. Colonel 1
level 4
depends if you are refering to live or what
Kill the boss in the last level.
You have to get to level 4.
What exactly are you talking about? Do you not know what a level is? It's a particular part of the game and when you beat it you move onto the next one.
You have to hack Call of duty 4, but don't. Don't cheat by hacking into the system. I know how, but I would never do it.
There is none