John: Trent is correct in recommending Ami-Back Tools and Quarterback Tools but
in my mind the two products aren't comparable. At the time that I tried QB two
years ago, it was notorious for trashing disks. Sure enough, I used it once
and I ended up having to reformat, reinstall, etc.
Since then I've used Ami-Back Tools, and their excellent back-up program,
without a hitch.
In all fairness QB may have improved in the intervening years, but I would
approach the product with caution.