I also use MicroStudio, and would love it if it had an option to auto save numbered back-up files upon a save or re-compile. Not having this, like you said, can really mess you up if you forgot to do a manual back-up yourself (something that can bite even the most diligent person). I'll have to take a look on the net to see if there is a 3rd party back-up system that would be suitable.