Homebrew iso / bin issues with non zipped roms, ie playstation gamecube heelllp

[njkmonty]

have recently softmodded wii have
usb loader gx working great playing my wii titles from external hard drive no probs
have setup most forwarders for emulators and are working great,
the only problem im up to is trying to get
playstation and gamecube and disc related emulators to work
i currently have Wiisx installed .
i downloaded gran turismo Gran Turismo [SCUS-94194]
it has 3 files in it .ccd, .img, and a .sub file, with the image file being around 661mb

is there a funny way how to load them?

also a bit clueless on loading downloaded gamecube roms, and sega saturn stuff,

i also have on my original xbox a mame emulator, and have just about evry rom available for that,
is there a descent working emulator for mame? or just the mame wii?


any way steer me in the right path?