darting

I know its for the gc, but I want to play it on the wii. Anyway, I got to the disc swap part, but it won't read the second disc! I tried loading my save through the second disc, but it asks for the first disc, and when I swap it doesn't work either! I guess there's a problem with the swapping, as both the discs work fine as long as no swapping is involved. I have the d2pro9, and I burnt the isos on two separate normal DVDs (not mini). Can someone please help?