This document outlines 5 steps to upgrade an existing analog security camera system to a high definition TVI system. It recommends upgrading the video processor first to support the new HDTVI standard. Then upgrading the cameras to high definition models that connect the same but provide better images. Monitors should also be upgraded to display the new resolution. Cables and accessories like baluns may need to be added if using CAT5 cable to connect everything in the upgraded system.