Instructions
Go to the Gameshark website and download the game saves that you want to transfer.
Connect your Nintendo DS to your computer via the USB dock. If you do not have the USB dock, connect the memory card to your card reader.
Locate the game saves on your computer, highlight them and press "Ctrl" and "C" simultaneously to copy the files.
Click "Start," then "Computer," then double-click your DS or memory card. Open the game saves folder and press "Ctrl" and "V" to paste the files.