to install ppjoy:
http://trackir.awardspace.com/Manuals/PPJoy_V2.1EN.pdf
when calibrating the "joystick" attend that: z-axis means to put your head in the horizontal
x-rotation means to move your head to the front and back
z-rotation means to strafe left and right
the next to last (in german schieberegler) means up and down.
After Calibrating the Joystick change your freetrack setting as shown in the pictures.
After that start the game and set the controls.
You dont have to change the properties of the controler in the game.
The most important setting is the curve-setting in freetrack., Without this you have an "auto center" function.
I hope i helped you.
Pictures:
http://www.bilder-space.de/show.php?file=26.06YdIFCSfv5rHKfzO.jpg
http://www.bilder-space.de/show.php?file=26.069xbhHVu7fAnrcBK.jpg
http://www.bilder-space.de/show.php?file=26.06bYVlQD1lFd1AbJH.jpg
http://www.bilder-space.de/show.php?file=26.06vh1QcS7YBKOYyS7.jpg