I bought a DS One cart for my slot 1 which works great for me. I want a slot 2 card, I don't mind on memory I just want something that I can use to boot gba games to with my slot1 storing them. I wouldn't mind some expandable memory for the browser so I can play with it. I've got a rumble pak now but never really use it. The only one I've seen is the EZ-Flash 3in1 but I'm not sure how it works and what you get in the pack. Can you put roms on the cartridge or is it simply to load roms from slot1 to slot2?