[Justaman]

I think you should edit the OP so that it doesn't imply that "TrackIR" is what needs to be implemented. It should say we want a "free look" button, or an extra set of hot-keys that only effect our visual orientation. In the best case, it would be a free-look button that toggles the visual orientation hot-keys from what they are, to your mouse. So that single button Free-look would seamlessly work with either mouse+keyboard standard setups as well as mouse/keyboard+joystick/other peripheral. As the peripherals them selves would handle the use of those inputs.

Which in comparison is next to nothing for development time.