So I finally got a Wiikey and installed it on Friday. Now I'm eager to try backing up a game. Do I need to find a huge size SD card, or will the dump come out in chunks so I can swap out my card when it gets full? Like, can I do this with a 1 or 2 gig SD card? Thanks. I'd try myself, but, believe it or not, I don't own any SD cards.