The easiest way to do this is simply map the GC controller P1 to the Xbox 360 controller and the wiimote+nunchuck to the keyboard. Since these games support both you don't even need Xpadder.
Specs: intel i5 3570k @ 3.4GHz;
16Gb RAM; Raedon HD 7900;
Win8 64-Bit
16Gb RAM; Raedon HD 7900;
Win8 64-Bit
