Coop, be careful bro. Yes, you can program the X45/X36 within AH when running XP. However, you will NOT get full use of all the buttons. For example, you will not get use of the knobs on the throttle. You will not get use of the 3 Aux positions OR the 3 modes available.
As far as the rudder on the throttle goes, I have that mapped to something entirely different than rudder. I use CH Pedals (not PRO, not USB).
Hope this helps...
Nim