How do you type cheats for need for speed Prostreet DS

First of all you need an Action Replay then look up cheats for the game on you tube or something pause the video then type the same thing with your stylus. first though you have to enter the name of the cheat but it doesnt have to be exact, just good enough to know what it is. You can buy Action Replays at Walmart and dont worry if it says Action Replay DSI because it still works on a regualr DS