Things You'll Need
Instructions
Prepare your DSi flash card for emulation
Download the appropriate SNEmulDS software for your card. A link is provided below in the References section of this article. Be sure to download snemlu.cfg as well.
Make an SNES directory for your roms in the root of your card.
Place the SNEmulDS.nds file into the SNES directory you just created.
Put the snemul.cfg file into the root of your card.
Copy the game ROM you want to play into the SNES directory.
Insert the flash card into your DSi, and enjoy playing these classic games.