What are the code breaker codes for resident evil 4?

there arent any cheats codes like x x x square cirlce trianle up down up down etc. but if you have a (name of game system) action replay/game shark, then you can do stuff like inf ammo, play as ashley, walk through walls, 1,000,000,000 pesetas, and a bunch of other stuff. you can buy the action replays at best buy and the codes for the AR are on the internet.