Use the proper homebrew on DSL(SNEmulDS). But there's not perfect SNES emu for DS yet. You can run some games on it, but you have to change settings depending on the game.
yeah. You need to fool around with the layer settings, and only a few games work (Super Mario All-Stars, LoZ: ALTTP, and a few others.) All the ones with the special chip in the cartridge (like Super Mario RPG) will not work. The emulator doesn't support it yet (even though it's the best one we have :/)
Ok lads,thanks very much.I thought it wouldnt be simple as there wasnt much info around about the subject.
The DS kinda sucks hardware-wise. The two emulators that work super well and NesDS (NES), and Lameboy (Gameboy). Also, make sure you DLDI patch any homebrew/app you put on your card with the proper DLDI.