From Camtech 2000:
RegKey Backup is a handy utility for making backups of Registry keys and their sub keys. It restores keys that have been modified by programs or web sites. This can be a life saver in certain situations such as restoring your Home and Search page after a sleaze site has taken them over or if a newly installed program changes your favorite settings. Once a backup has been made simply clicking that backup file will restore your settings. The backup file can be used to transfer your settings to another Computer such as Outlook Express settings and accounts, Internet Explorer settings or any other program that uses the Registry to store settings as most do.