Published by OneSwitch.org.uk Monday, 16 April 2007 11:07 pm.
I've found a free download wheelchair trainer here: ORI Applied Computer Simulation Lab's Wheelchair Mobility Training. It's a big download, but a fine piece of software.
I'm not sure how active this project is now, as the forum and on-line multiple-player drive mode seem to be down. However, you can still use this as a lone user. I can see this being very useful for some out there. Good stuff.
Connect any Joystick to this software using JoyToKey.