My comp is a few years old. Just bought a new Antec Solo case for the old girl though. Currently, my hardware specs are:

CPU: AMD Athlon XP-M 2600@2.4 GHz
Motherboard: Asus A7N8X-E Deluxe w/Trats BIOS 1013
RAM: 2x512 MB Crucial PC4000 Ballistix Tracer
Video: ATI Radeon X700 Pro
Sound: Creative Soundblaster Audigy 2
Hard Drive: Combined total of 360 GB

It's not the fastest set up out there, but it still keeps up fairly well with the low end crowd.