George said:
This little program will export and restore:
"The Emergency Recovery Utility NT"
http://www.larshederer.homepage.t-online.de/erunt/
Once installed, read the Readme.txt file for how to have it export
the registry automatically each day at startup.
I like this even better than System Restore, has saved my hide a
number of times.
HTH,
George
Seconded. I haven't had to use ERUNT in anger, but its predecessor, ERD,
has rescued my '98SElite systems a few times.
To use ERUNT, mind, you need to be able to boot into something that can
read NTFS discs, if that's what your disc is (it is the default for XP
systems); I asked ERUNT's author and he recommended BartPE, but there
are plenty of such; however, do make sure you have such a thing before
you need it.