R4 DS

Buy it! Mostly in china, hong kong and japan! Not legal to download in someplaces.

Step 1: What in There?

Menu: Game, music and GBA
Game menu: Games and files
Moonshell or games.
Music: use moonshell
GBA: your GBA

Step 2: Also in There

GBA ds windows
Cheats
Delet button
Open systems