Okay, I got it to work, but just once. If I accidentally hit 'play game' without loading a ROM, the system freezes on the Color Test screen, and I've had both games freeze up the Wii when I tried to run them. But I did get Earthbound to run once, so I guess it's just sort of a toss up whether it works or not... I just hope I can load my saved game since I didn't have an opportunity to save state...