I don't know if any of you have these, have used these, or even know what these are, but there is some work being done to get these to work under Windows 2000/XP. Right now, I am beta testing the driver, and it does work in the following:
 
Descent 2 (a bit choppy though)
Descent 3 (really smooth)
Aquanox (really smooth)
Clusterball (it functions, but the game really limits you on what you can do with the controller)
 
You can see the message traffic here, and general stuff from one of the last SpaceOrb fan sites is at the following:
 
www.planethardware.com/spaceorb
 
It was a wonderful controller, but the first company (Spacetec) started going under, got bought out by Labtec, and so on and so forth...
 
If you have one, don't can it just yet. The driver does function, and it uses a command line utility to contol it like the old Spaceware software used to. A couple of the other guys are working on an interface for that utility.
 
Just thought I would pass this along, as I still have 3 of these controllers and would like to see them in use again.