What are the specs of the oldest computer you currently use? Don't be ashamed.

I still use this computer for old games that I want to play:
500mhz Celeron Processor
512mb ram (Originally came with 32mb. I upgraded it.)
120gb hard drive (originally had 2gb HD. Upgraded it. Can't handle a larger HD.)
Dual boot with windows 98 and windows xp pro sp3 lite edition
1 front USB port at 1.1 speed
CD Burner & a DVD-ROM drive (used to have one 16X CD-ROM drive.)
4 back USB ports running at 2.0 speed (added)
Floppy Drive
I'm going to upgrade the processor to a 600mhz pretty soon. I think that's the max it can handle. The board still has those really old DIP switches and it still uses those really old SIMM modules. It cost a fortune for that ram.

I have MUCH older computers than this, but they're just collectible and aren't used. What about you? What is the oldest computer that you still use?