I'll beat that, I used this computer for a week:
333mhz pentium 2 MMX
132mb of ram(50mb of this is corrupted)
On board graphics card(shared memory)
7 gig hardrive
USB 1.0(1 slot)
Ye olde ps2 keyboard
Ye olde ps2 mouse
Dvd drive(that was a suprise!)
Operating system:
Slax livecd linux.
Bleh I have one that I used to use that is
400mhz celeron (can't run a game properlly that only requires a 166mhz pentium processor)
1.2 GB hdd(swap drive so it's awsome anyway)
42x cd rom
8MB onboard video card
formerly had 64MB (8 of which was being used for the onboard video card)
running windows 98 =P
another one I used until I got my current one had
Dual Pentium Pro 200mhz processors
ASUS baby-AT Mobo
something like 300MB of ram (I have a lot of 72 pin ram)
32MB Nvidia GFX card (generic AOPEN so it loses a lot not being able to have official NVIDIA drivers)
Some old ISA sound card I had lying around
Ran Windows 98
I used it to play rogue squadron until it died and I cut up the case playing with a gas welder and several air tools=P
My current one isn't very good either =P
2.6Ghz intel celeron(basically a 2.6Ghz pentium III I believe)
AOpen Mobo with 800mhz FSB
512MB of RAM
64MB onboard video card
Running Windows 2000