Things You'll Need
Instructions
Set up the Wii vertically so the two slot covers are up in the air.
Lift up the smaller of the two slot covers and you'll see two slots. These are for Gamecube memory cards.
Insert your Gamecube memory card into the slot on the right side of the console. This is slot A, and the Wii will search for the memory card in this slot first.
Power on the Wii and play your Gamecube game like normal until you get to the point where you want to save your game. When the game asks you if you want to save, select "Yes" and the Wii will save your game to the Gamecube memory card.