Backing up to A: can be a bit cumbersom. The easiest way is to make a folder on the terminal that you are using to run DB Studio. Share that folder and if you're not on a network already make sure that the Workgroup name is the same on the Avdap machine and your computer running DB Studio. Then Map the B: Drive to that shared folder.

When backing up don't forget to put a check in the box to back up Axxessorytalk files as well.

I'm not sitting in front of a unit right now or I'd give you the exact menu options. If you have any questions just post them. Someone here will normally answer them very quickly.