How do i import codes from the action replay dsi on the PC to my ds?

To import codes from Action Replay DSi on your PC to your DS, you'll first need to connect your Action Replay device to your computer using a USB cable. Once connected, open the Action Replay software on your PC, and you can either enter the codes manually or load a saved code file. After adding the desired codes, save the changes back to the Action Replay device. Finally, insert the Action Replay into your DSi and start the game to activate the codes.