Psychonauts on Mac Psi-Blast Issues!

[EstelleNotSoBright]

I'm playing this game on my MacBook Air, without any sort of mouse outside of my scroll pad, I may add, and I'm having a lot of issues in Agent Nein's lab. I'm attempting to shoot a psi-blast, and I can focus with shift, but it asks me to use right click to shoot, and when I try to shoot, I punch! I've tried pretty much every key to psi-blast and nothing seems to work. Any suggestions?

[CachoTognax]

maybe go to options->controls->bindings? I'm using a gamepad bit there you are allowed to at least rebind the conrols, the one we are talking about should be use psi power 1, maybe it went into the middle mouse button!