Miramonti
Lifer
I want to recommend WinRescue NT. Its an awesome program for backing up the registry and boot files and settings files etc (and anything else that you want, even the whole winnt folder, etc). It allows for archiving many previous backups at the same time. Its MUCH more flexible and thorough than RDISK.
Although to restore to a previous registry at bootup you still need to do the rdisk (which is also integrated into the program)
Although to restore to a previous registry at bootup you still need to do the rdisk (which is also integrated into the program)