For Mother 3, use Lunar IPS to get patch the game rom, then convert from a .gba rom to a CIA file and install (I could send you the one I made but it's illegal so you should make yours, it's not hard). That's what I did and it worked great! Leaving the Mother 3 translation files as attachment to make it easier for you. I don't know about the regular DS games though... You probably will need to do something more complicated to get those to work.