Ahh, slight update. Switched to the 2.2 software. I'll be using a Wiimote. A Wiimote has a 100fps, highly developed IR camera in it. The Nintendo brand ones can track up to 4 IR Leds (the cheap knock-offs can only do 2).
So, using a Bluetooth adapter for the PC, and software like BlueSoliel, you can use the Wiimote as your head tracking camera with little to no performance hit compared to a regular webcam with inferior frame rates.