I wouldn't mind info on this too.
Currently I back everything up to zip disks, and I've had to restore a couple of times too. Bit slow, but functional.
Luckily, Workbench is nothing like Windows. You can format a new hard drive, do a simple file/folder copy back from a zip disk or two, making sure to preserve the directory structure. Reboot and everything works perfect first time.
Try doing that with Windows and you're likely to get an "NTDLR not found - press any key to reboot"