> You don't need to use a password for backups.
Hmmm... I don't think that's true. Using Win XP Pro (SP3), my default account doesn't have any password. When I try to schedule a job in FB, it fails to start. My system has another admin-level account complete with password just for this purpose, so I went to the Windows scheduler and changed the FB job to use the other account and password. In that case too, it fails to run properly, though I'm not sure why.
Finally, I created a password for my normal User account, and rescheduled the job through FB. Again, it failed to run, as there's no way to define the password through the FB interface. In order to get the scheduled job to run automatically, I finally had to go into the Windows scheduler, edit the job created by FB, and enter the newly assigned Windows password.
Now, the job runs as expected, but it's not very convenient, as it doesn't seem to be possible to successfully schedule a job from within the FB interface. At the very least, I have to go into Windows scheduler, open the FB job, and add my User password.