For more thorough documentation see doc.html

EZ_GPO is a tool for network administrators who manage Windows client workstations 
  using Group Policy Objects under Active Directory, Novell NDS/Zenworks or any 
  other client registry management system. It gives centralized control to network 
  administrators over the users power management settings. Due to the designs of 
  Microsoft's implementation of power management, this is impossible using normal 
  techniques.

Basically, how it works is there is a small client install of a single binary 
  application that will be executed from the startup group in the "Start 
  Menu". This will read in the desired PM settings that are set using GPOs 
  in integer and string value format and then, using Microsoft's core API, will 
  make the appropriate changes to the PM settings, which will be available immediately 
  thereafter. There is no threat of a race condition since GPOs are applied immediately 
  after authentication whilst the startup group executes well after user services 
  have initialized and are running. It is even possible to execute the client 
  application using an entry in the HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run 
  key, thereby centrally controlling execution of the application. Theoretically 
  it is also possible to skip the client install altogether by then executing the client 
  application from a network share but that has not been tested.
  
INSTALL
Install the ADM GPO template located at GPO/EZ_GPO.adm
Load it and enable the "Base Options" policy by choosing the defaults.
Enable and configure the "Options" policy if needed.
Enable the "Simple" policy and configure the values (in minutes).
Install the binary GPO/bin/EZ_GPO_Tool.exe on the client work stations and
configure to run from the "All Users" startup group in "C:\Documents and Settings".
log out and then back in with a user who is set up to have the group policy.

UPGRADE
To upgrade first remove the ADM file from the list of available adm templates in the user 
portion of the GPO and then apply the changes. Then add in the new updated ADM file It should pick
up your old settings but still pick up the new version numbers. Update the binary install according to 
you normal procedures. 

TESTING
use PMlibTestSuite.exe located in the folder "PM Lib Test" for testing purposes.

ERRATA
Please note that the tool is limited in what clients it will set system standby for. The 
limitation is hard coded into the tool and revolves around the presence of a new version
of power management named ACPI (more specifically the support for the S3 sleep state). 
Most older hardware had Advanced Power Management v2 (APM2) and recent Pentium 3 
and early Pentium 4 machine had a flavor of ACPI that was not fully implemented. Most 
Pentium 4s and higher machines these days have full hardware support for ACPI and 
the S3 sleep state.
