Need a simple tutorial how to play off gamecube games from sdcard

Hey, untill i can get back the hdd my mother borrows that im going to use for gamecube games im going to use my newly bought 16gb class 4 which i bought for 12 bucks and i do now want to try to make them run on that card with dios mios lite

So:

What must the folder be named that the gamecube isos are going to be in?
And with lite installed can i easily run it from usb loader gx? Or wii flow?