I have a new Nintendo DSI XL with firmware 1.4.3u. I would like to purchase the Acekard but am very confused as to which one to buy. I thought i could just play games from the SD card slot on the side but I guess not. I'm a newbie. Please give me info on what Acekard to buy and how to proceed with installing it. Again, I'm a newbie. Where do I start?