Backing up SMS periodically (possibly timestamped)

I currently use SMS Backup & Restore, but that has two drawbacks I see

-I have to manually initiate the backup
-It only stores and restores one file, so I have to overwrite and rename

I just lost my texts and only had a two day old backup.

I'd love to see the same thing but that can do it with a timestamped file such as backup_2009-12-18-15-08.xml (pickable when restoring) and can run at a preset time each day or each half day.


Does such an app exist, or is there anyone who'd want to make one?

 

Excellent, SMS Backup & Restore was just updated to include timestamping backups and picking which file is restored.