Description of PRegistry - TRegistry Superclass :
This is a free source unit which provides a simple extension to the Delphi TRegistry unit. PRegistry provides access to HKEY_LOCAL_MACHINE under Windows NT with the same interface as TRegistry. Also provides a new method, ReadExpandString, which read and expands strings saved with path expansion variables such as %SYSTEMDISK%. No documentation is provided, but TRegistry users will have no problems!