Indeed, for using my GC controller to play Xenoblade you just go choose Wii controller 1 to be emulated, and then configure it the same way you configured the GC controller option.
Windows x64
i7-2670QM @ 2.20GHz
Nvidia GeForce GT555M
DDR3 PC3-10600 DDR3 PC3-12800/8GB Total
Dolphin 3.0-815 x64
i7-2670QM @ 2.20GHz
Nvidia GeForce GT555M
DDR3 PC3-10600 DDR3 PC3-12800/8GB Total
Dolphin 3.0-815 x64
