Flight Simulator 2000 Joystick Troubles?

I have installed FS2000 on Microsoft 2000 and XP and set up my Saitek Aviator joystick, and it just doesnt work on 2000 i cant calibrate or enable the joystick, but on XP it says that it cant find a file when i try to select the type of joystick, is this software to outdated for my joystick, or what, thanks.