KiXtart Command-line Utilities - Registry
REG.EXE
REG.EXE is a command line utility that manipulates the registry on a local or remote computer. You can Query, Add, Update, Delete, Copy, Save, Backup, Restore, Load, and Unload.
Source: Windows NT Resource Kit.
REGENTRY.HLP
Windows Help File that houses a database of Windows NT registry entries. Because it is a Windows Help File format, you can quickly search the database for the registry entries you are looking for.
Source: Windows NT Resource Kit