Well I think yes you better programm your keys for the rudder into the throttle.
The keys you need are a s and d (a left, d right and s to center it back).
Spin basics as far as I know: you better throttle down, neutralize your stick and push it forward to keep your nose down and gain speed. In some planes like the Spitfire that might be enough to stop your plane spining, if youre not spining too hard you might even not have to throttle down in the spit... If this isnt enough and/or you want to get out of the spin faster you can put your rudder full into the opposite direction as you are spining to (better look for some new pedals, helps alot in other situations too;) ). Once your plane has stoped whirling around you should be very quick in neutralize your rudder back if you dont want to begin spin the other direction around:), and keep your nose down for a while, take a breath of relief and pull your plane back up very very very smoothly to avoid running into another spin again. Well if youre already very low remember the golden words of the hitch hiker's guide to the galaxy: don't panic!:)
Try to react as quickly as possible, in WB were some planes like the Ki84, which werent to recover after you have passed a certain point in spining (or it took a heck of experience to get them out), Im not sure if any plane in the AH planeset have such characteristics, but better dont try to find it out.
