s in the \system32\config folder.
    * Research Volume Shadow Copy, and test how it restores a previous version of your registry files.
    * If your computer has a serious problem, which requires pressing F8 at boot-up, remember to try Last Known Good as your first recovery option.
    * Seek alternative methods; think laterally.  Instead of risking making changes with your registry editor, what else could you do?  I urge you to consider configuring a Group Policy rather than tweaking the registry.  Occasionally Vista may provide a new GUI to configure a setting, for example, instead of launching regedit and changing the value for AutoAdminLogon, you could launch the Control Panel --> Users and un-tick the setting called, 'Users must enter a user name and password.'
    * Learn how to perform a remote registry edit with: Connect Network Registry.
    * As you work through my registry examples, make a point of studying each page's 'Key Learning Points'