1. Download the Action Replay software. You can find it online from a reputable website.
2. Install the Action Replay software. Follow the on-screen instructions to install the software.
3. Connect your DS to your computer. Use a USB cable to connect your DS to your computer.
4. Launch the Action Replay software. Once the software is installed, launch it from your desktop.
5. Select your DS. From the main menu, click "Select DS."
6. Choose an action. From the Action Replay menu, you can choose various actions, such as adding cheats to your game, modifying save files, and more.
7. Follow the on-screen instructions. Once you've selected an action, follow the on-screen instructions to complete it.
8. Save your changes. After you've made changes, click the "Save" button to save them to your DS.
Note:
- Using Action Replay can void your DS's warranty.
- Only use Action Replay with legitimate copies of the Pokemon games. Using it with pirated games may cause problems.