Lori, one likely reason you're unable to use the Default Domain Controller Security Policy and the Domain Security Policy icons has to do with the version of Administration Tools that you might be ...

For the policy “Configures the chat icon on the taskbar GPO,” select Enabled to enable this setting, click Apply and OK. Once again you can choose to Show, Hide or Disable the icon.

The system tray icon for Microsoft Security Essentials allows easy access to the anti-virus application's user interface in Windows 7, Windows Vista and Windows XP.