Vista - backup and restore will not change settings

I am running Vista Home Premium 64bit and have been using Vista's Backup and Restore to back up files to an external disk, connected via firewire. Everything seems to work fine, and I've even used backup and restore to solve a printing problem (by reverting to an older backup).

I now want to change my backup settings and backup to a new internal drive I've installed. Unfortunately, I am unable to change my backup settings. When I go to 'Backup Status and Configuration' and click on 'Change Backup Settings' nothing happens. Nothing. No wizard, nothing. So, I don't seem to be able to change my backup settings at all now.

I believe there should be a Back Up Files wizard that should run. Is there another way to run it besides clicking on the 'Change Backup Settings'? Or is there a way to manually change the backup settings? I'm stuck!

Any ideas on how to get this to work?