Monitor: 17" Lenovo ThinkVision L174 LCD Monitor
Processor: Intel Celeron D 331 2.66GHz 533MHz 256KB Socket 775 CPU
RAM: Samsung 512MB DDR RAM PC-3200 184-Pin DIMM
HDD: Samsung 80GB SATA/300 7200RPM 8MB Hard Drive
Motherboard: MSI 848P Neo2-V Intel 848P Socket 775 ATX Motherboard w/Audio & LAN
Keyboard/Mouse: AVS Gear EZ-9910(OP) PS/2 104-Key
Slim Multimedia Keyboard (Beige) /3-Button USB & PS/2 Optical Scroll Mouse (Beige)
Part # H3003-BEI-USB-PS2
New
Cabinet: Any ATX Cabinet
Speakers: iMicro SP-IMD168B 2-Piece 2 Channel USB Powered Multimedia Speaker Set w/Headphone Jack (Black/Silver)
There could be cheaper ones out there like obsolete hard-to-find products. But these are the ones I got from the site I referenced.
Hope it helped.