No updates for a few weeks, but lots of progress. The thing is all painted now, and I stuck a $200 barebones PC inside. I haven't put the hinged top/back panels on yet.
Here's the guts:

This is the cab in upright mode, pretending to be a PC:

...and here it is tilted back, running Hyperspin and my fave classic game, Elevator Action:

Okay, I'm definitely throught the woods on this project. My to-do list includes:
- Use piano hinges to attach top and back panels
- Build a little panel on the back for power cable, USB hub, power button, etc
- Decide on a front end (check out Mala and others)
- Figure a way to add sturdy handles that don't look crappy
- roms roms roms.
- Turn it into a Vista Media Center (TV tuner, remote control)
- Repeatedly spray all painted surfaces with clear coat until the bottle runs dry
FYI, cab specs are:
- AMD Sempron
- Geforce 6100 (onboard)
- 2GB RAM
- 500GB HDD
- Vista ultimate
- Acer 22" LCD
- Mini-pac encoder
- Hauppauage PVR-150 tuner
- Microsoft MCE remote