You have posted in the wrong section my friend. This is for private servers, cracked games etc.
Here is the Steam sub-forum.
Call of Duty - Modern Warfare 3 (MW3) Hacks & Cheats - MPGH - MultiPlayer Game Hacking & Cheats - Hacks, Cheats, Downloads, Trainers, Games
By the way, It would do you some good to check the date when the hack was posted, what version of the game the hack is compatible with and read any recent replies. You have to read until your eyes bleed. This forum isn't a mess, you're just too concerned with hacking to take the time to read IN FULL!