Software 
I use Mamewah for my front-end.  You can find out how I installed it here.

Most of the persons working from my plans will be at least using MAME to play games.  Jeff at Monstarcade can get you the roms you need to play the games, as well as all the Laser Disc games (think Dragon's Lair and Space Ace).  I highly recommend him- he's a great guy.

Plenty of PC games run just fine on the cabinet.  Pretty much whatever games you can remap the keys for will work.  Tiger Woods plays fantastic on the cabinet, by the way.

Table of Contents
Background
Tools
Materials
Cutting Side One
Cutting Side Two
Dado for the Base
Building the Base
Monitor Shelf
Ledger Boards Speaker Area- Start
Upper rear
Back
Top
Drawer
Door
Speaker Area- Cuts
Painting
Assembly
Marquee
Monitor Bezel
List of Boards
 

Control Panel Part 1
Control Panel Part 2
Wiring the CP
Attaching the CP
Finishing Touches
Software
Final Thoughts