I put this bad boy together this weekend in a frenzy of project madness. It's a 32" LED HDTV set horizontally in a wooden frame (basically 2x4s) and covered with plexiglass. There is a Chromebox PC with wifi hooked to the back with a wireless keyboard and mouse. The system can then log into Roll20 and display the player's view of the dungeon map, etc. The GM runs the session maps from a laptop. Physical minis/tokens can then be placed on the plexiglass and moved about without scratching the screen.