hey crunch!
there is a software called joytokey where you can really easy achieve what you are looking for, and its for free.just google it.
or if you have a ch stick, the ch software is capable of doing this as well, therefore you wouldnt have to download another program on your rig.
a while back, when i had the same question, i asked over at ch hangar, and bob church wrote for me a little script, which made my hatswitch of the fighterstick to emulate the mouse axis.
here's the link to the thread i opened back then....
http://www.ch-hangar.com/forum/showt...mouse-movement