if im understanding what your asking, you want to play nes and snes games on you G6light flash cart on your DS im assuming ?
well nes, and snes roms wont work without an emulator,there is a snes emulator called SNEmulDS
here is the home page
http://www.snemul.com/ds/
here is some handy info
http://wiki.pocketheaven.com/SNEmulDS
hope that helps ;D
also there is no need to double post or bump your topic in the one day