szumi27: X-wing 1998 Special Edition for Windows.
Then you have to use some software to unify the two peripherals, essentially you have to create (either with the saitek software or some third party utility like joystick gremlin) a virtual peripheral that only has axis X and Y and then Z for the throttle, disabling all the additional axis.
Also: X-wing for windows while it is more "mappable" than the DOS versions should have a button limit IIRC (it uses the same engine as X-wing vs Tie Fighter which only allowed to map something of 12/16 buttons in-game), so if you want to use all the buttons the software is needed to map them as well (just leave the trigger and "button 2" mapped in-game, in my experience mapping them with external utilities makes them act funny).
If the saitek software is anything like the CH Control Manager software of my CH hotas you should be able to map the ministicks of the X-56 as additional 4-way switches.
NOTE: in the windows version the throttle works in 1/3 steps instead of being fully analog for some reason, not unlike the way it works by using an additional utility in the dos versions (which do not support a throttle axis natively) even though the throttle in X-wing vs Tie Fighter (which uses the same engine) is fully analog.