I have an R4 and a regular old DS Fat. I want to play some GBA games (Read: Pokemon Hacks and Mother 3) But, I'm not quite sure what exactly a Slot-2 Card does. From what I get, it's like an R4, but you put it in the Slot-2 of your DS. Then it plays the ROMS saved on there, just like the R4. Plus it acts as a RAM thingummy so you can use things such as the opera browser. Right? How exactly do these things work? What do they do? I seriously have no clue. And the search function hasn't really enlightened me either. Thanks and such in advance.