Using a mouse and keyboard with Trauma Team

[chrono99]

Everything runs fine but how am I suppose to use the nunchuck stick with games like Trauma Team. Right at the beginning it says use meds to bring health up and you have to kinda go upper left with the nunchuck stick. Cause its a wheel on the game. How am I suppose to go upper left or upper right or lower left or lower right with a keyboard or a mouse? Is there a function or setting im just not seeing??