If no schedule is specified, the default schedule for all installations will be everyday at 3:00 AM. Specify the schedule using the options in the Group Policy Setting. **** 4 = Automatically download updates and install them on the schedule specified below Clicking the icon or message provides the option to select which updates to install. When the download is complete, the icon appears in the status area, with notification that the updates are ready to be installed. Windows finds updates that apply to your computer and downloads these updates in the background (the user is not notified or interrupted during this process). **** 3 = (Default setting) Download the updates automatically and notify when they are ready to be installed

When the download is complete, the icon appears in the status area again, with notification that the updates are ready to be installed. Windows then downloads the selected updates in the background. Clicking the icon or message provides the option to select the specific updates to download. When Windows finds updates that apply to this computer, an icon appears in the status area with a message that updates are ready to be downloaded. **** 2 = Notify before downloading any updates and notify again before installing them If the service is enabled, you must select one of the four options in the Group Policy Setting:

This setting lets you specify if automatic updates are enabled on this computer. Specifies whether this computer will receive security updates and other important downloads through the Windows automatic updating service.

Windows 2000 server update pack