Today I’ve played around with some of the available tools for using the PS Move on the PC and put together a mix of available and modified tools that allow one to use the Move as a mouse or controller for an FPS game.
A zip with everything one should need can be found at http://osvaldojr.com/Move.zip
There is a newer version of my software that is much simpler to use. Download at http://osvaldojr.com/moveforpc.zip
A video of this in action can be found at http://www.youtube.com/watch?v=c0RWEB3rukI