MMC 3

How can I enable the new Microsoft Management Console (MMC) 3.0
feature set in Windows Server 2003 R2?

A. By default, Windows 2003 R2 uses the old MMC 2.0-style UI with the
old snap-in dialog box and no Action pane. To enable the new features
and interface, perform these steps:
1. Start the registry editor (regedit.exe).
2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MMC.
3. From the Edit menu, select New, Key.
4. Enter a name of UseNewUI and press Enter.
5. Close the registry editor.