It's really pretty hard to play Tron with ANYTHING but the original setup. Before WinXP, the best option was the Logitech Wingman Warrior, but Logitech refuses to continue support for serial joystick in XP.
Nowadays, when I play, I find I can get by with using my trackball for the spinner, but it's not really the same.
Thanks for the reply - I take it then that none of the X-Arcade Joysticks have spinners, correct?