I always backup my AH "settings" folder whenever I change anything. Not only does it contain the views for each aircraft, it has all your stick settings, and password in case you forget it.
When formatting a disk again store the whole settings folder somewhere, either on CD or another drive. Its usually about 20MBs so its fairly large. Then after re-installing AH onto the reformatted hard disk you can just drop your settings folder into the root directory of AH and all is restored to what you had before. Saves a lot of hard work.