How shake the nunchuk

[RenatoRincon]

[attachment=19046]I was playing zelda SS until i read the instructions, and said I should shake the nunchuk and i don´t know how do it with a mouse and a keyboard and the control configuration doesnt appear the option to shake the nunchuk.
Someone can help?

[attachment=19046]

[Craftyawesome]

Under extension motion simulation, map shake x, y, and z to a key.