You can see a video of the arcade in action at Youtube, here.
Things you will need:
1 sheet of 4'x8' 1/4" MDF
1 sheet of plexiglass
1 set of joystick and arcade buttons
several cans of spray paint
an older PC
an LCD monitor
1 USB keyboard
nes controller ports (ripped from a four score)
2 cases of Diet Coke :)
Inside is an old PC and a 17" LCD monitor. The back of the cabinet has two USB ports and two NES controller ports. You can connect regular, un-modded NES controllers and play with those or use the joystick and buttons on the control panel.
The front end is a simple VB program that auto loads when the PC boots. You never need to connect a mouse or keyboard to load your games. The VB program gives a list of games installed. Using the joystick, you can select the game you want to play.
Also, you can connect a keyboard and mouse to the USB ports in the back and use the set as a regular PC. It has wireless internet built in.