sure. this for computer or Playstation 3?

For computer al you have to do is be the host of the server.

press the console key (`~) and type devmap mp_"mapname" replace the commas with the maps name ex. devmap mp_crash

then just type in cvars.
God= god
all weapons= give all
infinite ammo= player_sustainammo 1

For ps3 you need a flash drive.
- save your data from ps3 to your flash drive.
- open up the call of duty folder on your computer.
- open up grado_sp or grado_mp
- type in set player_sustainammo 1
*to be able to use the hacks online, you need to bypass the patch. for information on that just got to the Call of Duty 4 Expoits and Hacks forum on NextGenBoards.com

can you give code for unlimited ammo?