i think it saves the database on shutdown of wincab (Chris, is this correct?)
also, does this "button" you use to "start and stop" just cut power to turn off the computer, or is it wired to the same place as the original PC power button?
if you are running wincab, then you are obviously running windows, so which version are you using,
98, 2000 or XP?
because 98 and 2000 will just shut straight off if you press the power button, but XP should shutdown the same as if you had clicked START, ShutDown
im running XP, and this is what my juke does (i.e. shutdown properly), and ive never had a problem with the database.