For nunchuk (in numpad):
Go to left '4'
Go to right '6'
Go to up '8'
Go Down '5'
Then you can imagine left to right etc...
It works great, i test nunchuk emulation in Mario Striker and it's good.
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CPU : Intel Core 2 Duo E6300 1.86Ghz
Video Card : 8600 GTS
RAM : 2 Go DDR2
OS : Windows Vista Business 32 - SP1