Registry Snapshot software?

As i did not want to restore everytime a full image when something went wrong with the Registry i am looking for a kind of Registry-Snapshot application.
Is there a little well testet and trustfull application out there which makes scheduled (or at each boot) Registry snapshots to a second non boot partition? It should have also the possibility to restore the Registry by accessing it from a bootable CD, etc. Some suggestions?

 

I'm using Erunt. I don't think there is everything in it you are looking for, but anyway take a look at the feature below.

Features
--------

- Backup the Windows NT/2000/2003/XP registry to a folder of your
choice

- System and current user registries selectable

- Command line switches for automated registry backup and restoration

- Restore the registry in Windows 9x/Me/NT/2000/2003/XP and MS-DOS
(all-in-one restore program) or the Windows Recovery Console


http://www.larshederer.homepage.t-online.de/erunt/

http://www.larshederer.homepage.t-online.de/erunt/erunt.txt

 

Erunt is a little gem that can get you outta trouble - think it nearly suits your needs, have a look at it anyway.
Comes with a registry optimizer - NTREGOPT that will rebuild the registry.

 

I used that little soft a while ago, but i had problems, when starting from a Boot-CD, to execute the restore function. I cant remember the error messages, perhaps i should give it a try again.