GPMC eliminates the need to remember which utility does what. You can manage both Windows 2000 and Windows Server 2003 domain controllers with GPMC, but you must install the console on either Windows Server 2003 or Windows XP SP1 with XP QFE Q326469. You must also have the .NET Framework installed.
GPMC is available for download from Microsoft's Web site. The filename is Gpmc.msi.
Start the installation by double-clicking the file. Installation is quick and easy, and it includes only a couple of screens, including a license agreement.
After installation, you can start GPMC by going to Start | Administrative Tools | Group Policy Management.