Things You'll Need
Instructions
Browse to a website that has DS games.
Downloads games from the site, and save them onto your computer.
Start the computer, and insert a DS-compatible SD card into the appropriate slot on the card reader. Only a few SD cards will work when transferring game files from the PC to a Nintendo DS.
Wait for Windows to detect the SD card, and initialize it for use on your PC.
Right-click the "Start" button on the Windows task bar.
Click "Open Windows Explorer" on the pop-up menu.
Navigate to the folder on your PC where you saved the downloaded Nintendo DS games.
Highlight all of the Nintendo game files you want to transfer from the PC to the DS.
Right-click one of the highlighted Nintendo DS game files, and click "Copy" on the pop-up menu.
Click "Computer" in the left pane of "Windows Explorer."
Double-click the drive letter icon associated with the SD drive to view the contents of the device.
Right-click anywhere inside the SD drive folder window.
Click "Paste" on the pop-up menu, and wait for Windows to copy the DS game files to the SD card.
Remove the SD card from the card reader.
Power off the Nintendo DS, and insert the SD card into an available slot on the game console.
Turn on the Nintendo DS, and use the buttons on the face of the console to navigate the SD card menu screen and play the new games.