Hi
Personally I keep a copy on a cd-rw of the whole HTC folder. That way evrything is the same as before.
Just do an install of AH then copy the HTC folder over to program files. If ya do it from a cd make sure u go thru the new install and change attributes from read only.
To save just keyboard and stick settings you'll find those in Program Files/HTC/Aces High/Settings but you will have to redo all your veiws, convergences for each aircraft.