I stupidly didn't see this post! I tried that vjoy and my controller keeps going round in circles and have the same mouse problem.
I uninstalled vjoy and delelted the folder and the same thing keeps happening!
yeah i think v joy is what the cool kids use! lol i tried it once with aliens vs predator but didn't like it. its a pity they haven't worked on that project in a bit maybe you should take it of them!!!
im on windows 7 i had it working with a normal install but when its installed the way you showed us in the video tutorial it no longer works through the graphics engine! its no big deal as i like the ability to use the controller!