Things You'll Need
Instructions
Insert the Action Replay DS cartridge to your Nintendo DS console. Connect the Action Replay DS cartridge to your computer with the provided USB cable. Copy and download the codes you wish to use. Disconnect the cartridge. Do not turn off your Nintendo DS.
Click on the green button with a little star. Scroll down the menu and click on the cheat code you wish to enable. You will be taken back to the main page. If you wish to enable more than one code, press the green button with the star again and choose another code. Once you have chosen the last code, take the Action Replay DS cartridge out of your Nintendo DS without turning it off.
Place your DS game into the Nintendo DS. You will see a button that says "Start." Click on the "Start" button to begin your game with the cheats enabled.