Im new too this, sorry for the questions that have probably been answered a 1000 times. 1. Is is it possible to run DS roms on an R4? 2. I know you need a slot-2 device to run GBA games, where do I find one? 3. How many DS games could I fit on a 2 Gig (roughly, I know it depends on size)? 4. Is R4 a good choice?