At the time of this writing, Essential Business Server 2008 has a default screen saver time out of 10 minutes and locks the server. This can be highly annoying during setup when you are watching the progress from across the room as each server runs its respective installation routine. To get around this bring up a command prompt by using SHIFT-F10 and type in “explorer” to bring up Windows Explorer. From Windows Explorer, expand (click on the + sign next to each name) the folders on the lower left of the left pane of the window, expand the Control Panel, select Appearance and Personalization, Personalization, and then Screen Saver. I highly recommend you turn this back on after you are done with the installation and configuration though so the server will lock when unattended!
If you prefer to stay in the command console, for a great list of command line syntax to open control panel items in both Vista and Server 2008, check out the HowToGeek site page too for a great list.
If your monitor decides to shut down on you as our Messaging Server just did after you set your screen saver, check your power settings (same as above, except expand Control Panel, Harware and Sound, and then select Power to be taken to the Power Options window), click on “Change plan settings” and set the “Turn off display” to a time you are comfortable with.