Figured it could be a neat thread.
I have two computers I dedicated to DOS gaming.
One is an old Micron laptop... nice big 15" screen, SoundBlaster audio (easy to configure!). Think it's a PII 333MHz with 128mb RAM. I have a 20gb hard drive in there to store all my stuff and run 98SE on it.
The other is my custom built all in one PC. It's a standard AT mini-tower that I glued a 15" LCD screen to the side and wired it up inside to the video card. It also has internal speakers. I added handles on the top to carry it around... still trying to figure out how to get some sort of flip-down keyboard and mouse to cover the screen. This system is a Pentium 233MMX, 128mb RAM, 20gb hard drive, Radeon 7000 64mb PCI video (tears through Quake and Duke3d!), AWE64 ISA sound card, and a PCI USB 2.0 card.
I'll get pics up when I get home.