A couple key things of note...

[BurtonJ]

Thanks for your interest in Jedi Knight / Mysteries of the Sith

A couple key things of note:

Windowed Mode:
Don’t be alarmed when you launch the game and you are in windowed mode.
Only the cutscenes and menus are locked into windowed mode. The gameplay will run in full screen.

Controls:
Back when the game released, the common WSAD controller layout was not yet standard. From the main menu, goto “Setup/Controls/Options” and then click “Load Configuration”. We included a configuration set called “modern”.

3D Acceleration:
3D Acceleration is disabled by default. On modern videocards results may vary. Try at your own risk! But the game should perform fine in software mode with acceleration disabled.

Changing Resolution:
Make sure that when changing resolutions you only do it from the Main Menu of the game while not in a mission.

Save Often:
The best cure is prevention. F9 is the hotkey for quicksave. Use it frequently.