Things You'll Need
Instructions
Install the save game program on your computer, following the instructions that came with it.
Plug the DS into the computer using the USB cable that came with the software. Open the game saving program, and click the "Sync" button to sync the program with the DS.
Open the game saves on your DS. Highlight the ones you want to transfer to the computer, and hit the "Transfer" or "Save" button. The name of the button will vary depending on the software you use. This saves the current games on your DS to the computer.
Download saved games from other DS save game sites to your save game software folder. Use only trusted sites for downloads, as this prevents you from downloading a virus to your computer or DS.
Open the save games that you want to add to your DS. Highlight the files, and click "Transfer," or drag and drop the files into your DS folder. Allow the file transfer to complete before disconnecting the DS from the computer.