A DS Emulator for the iPhonr is possible. I think you should be able to set the screen settings on the DS Emulator. Like you should be able to turn the iPhone in portrait form and both screens would show, but in landscape only the bottom screem shows, and when you want you can make the Top screen show in landscape mode. This would be awesome. You would be able to play games online over WiFi, but could you play it over 3G or EDGE?