In keyconfig.ini, you can change the inputs for "move forward" and "fire weapon" to whatever you want. You can't change fine aiming, but the game can be played without that.
I haven't figured out how to use the analog sticks with Joy2key, but opening a config file in notepad might make this more doable?
I used the shoulder buttons for mouse movement. It's a bit obnoxious because I think it expects you to use the mouse to click on the tabs in the set button configuration box, so anything we do with the keyboard gets caught by the keyboard mapping until we switch tabs. I also haven't tried this on newer OSes until just now, and it freaked out and I got stuck in that box and had to use taskmgr to kill it. So you might need to use the review cursor / Jaws cursor to switch to the mouse tab.
Looking at a config file in notepad, it looks as though it should be able to map just about anything on the controller, and I'm confused that I haven't been able to find options for the sticks in the main window.

Hi,

@cae_jones,

Thanks a lot for your answer. Only one question about the keyconfig.ini file, how can you aim somewhat precisely if the only turning method you have is the 45 degrees turning? Or is there something i am missing?

I did manage to switch to the mouse tab, but as you mentioned, the key which gets registered is the tab key, or in other, more rare occasions, the shift.

@lordlundin

Thanks as well for your answer. It sounds interesting, but is x mouse a specific application or did you change your config in the keyconfig.ini file?

I will give it a shot i think

Greetz mike