For anyone who gives presentations using their computer and digital projector, here are some suggestions to ensure a faultless presentation. Open your System Preferences>Energy Saver and select Power Adapter. Set computer sleep and display sleep to never and turn off all other energy saving settings. In System Preferences>Display & Screen Saver, turn off your screen saver. Make sure all needed applications and documents are installed and open properly. Plug in the laptop's power supply to ensure that you are not dependent upon your battery, and exit all unnecessary services and applications. Eliminate desktop clutter and close all your instant messenger applications. You may also want to bring some additional items with you such as audio/video cables, power adapters, extension cords, extra batteries and an extra copy of your presentation on a CD or other portable device.