1: Insert disk into your wii (make sure the cd front is facing ---->)
2. Plug in your Gamecube controller into the socket at the top of the wii (remove the cover).
3. Pick up your baton (wiimote) and lift it up slightly and click on the 'A' button
on the upper left hand corner of the wii menu.
4. After that click the start button with your baton.
5. Next set your baton down and pick up the gamecube controller and start playing...
if you've got a wavebird ( the wireless GC controller) it has to be a Nintendo NOT a third party one 'cause the Wii will only recognise the official controller.
if it's wired then follow all the above advice