I wanted to play a couple neo geo color games on my ds. So I download racedsfixed and put it on my ds along with some games. The problem I seem to be having is that the emulator doesn't recognize my games. So I was wondering if they need a certain file extension? Right now they have the file extension .ngc. So whats wrong with it? Oh and I have an r4i sdhc card if you need that information. Thanks!