what exactly is required to play gba roms on ds? i have a ds fire card 2 gb right now. what do i have to purchase and what programs do i have to download? i was looking into the e-z flash 3 in 1 card but i dont know exactly what is required to play the game. is it a separate gba emulator on the slot 1 card and then put the games on the slot 1 card and it plays off of slot 2 or what?