The site that I've added to the related link will offer what you requested and much more.
you find it by looking around all the levels for lab tops that are just siting there for no reason
If you play on xbox you will get achievement points, they really do nothing. i find them for the fun of it:)
Level 67
If your tlkin bout modern warfare u have to find Intel.the more Intel u find the more cheats u unlock there are no codes thou
You have to find all the Intel for 100%. You may also have to beat it on veteran, although I'm not sure about this one.
There are Call of Duty games for the PS2, but there are no games in the Call of Duty Modern Warfare series for the PS2. Modern Warfare Yes there is. You can find it at Wall-Mart or Target
Youtube.com
you can find a list of achievements at: http://www.xbox360achievements.org/game/call-of-duty-modern-warfare-2/achievements/ and also a guide for them at:http://www.xbox360achievements.org/game/call-of-duty-modern-warfare-2/guide/
Its about killing Makarov. Soap and Price will have to find him.
Campaign screen.
Yes you can cheat, but, you need to play the game to get cheats. You must find these Intels in the levels. To find them you can get Call of Duty Modern Warfare: Reflex Edition strategy guide. Here are some cool cheats you can have: Infinite Ammo, If you throw a grenade it blows up and 5 or 4 more come out, You can shoot paintballs, and you can do slow-motion.
The game is already out.