Having just upgraded my home server to a rack mount version, I have my near mint condition fanless CV860A for sale.

Complete with 512MB of Low Profile RAM, all you need to add for a working machine is a 2.5in hard drive, Compact Flash Card, or DOC (Disk-on-Chip).

PDF of the bare system
http://www.lex.com.tw:8080/product/spec/Neo.pdf

Alternatively, go to http://www.lex.com.tw:8080/index1.php and browse to Chassis - Neo

More pictures can be found here
http://linitx.com/viewproduct.php?prodid=10340

Specification
1 Ghz VIA C3 Nehemiah Fanless
LEX CV860A Motherboard
1 x PC133 SDRAM Slot fitted with 512MB Kingston Low Profile DIMM
1 x 40-Pin IDE
1 x 44-Pin IDE
3 x 10/100 Realtek 8139 LAN Ports
2 x USB Ports
2 x RS232 Ports
1 x Parallel Port
Keyboard and Mouse PS2 Sockets
Back Panel Headphone and Microphone Sockets
Onboard Compact Flash Slot
Onboard DC-DC Converter powered by external 60W AC adapter

This machine has proved perfectly capable of running several different flavours of Linux (where it was operating as an IMAP, web, domain, print, and file server for my household), as well as giving me a fall-back position of being powerful enough to run Windows Server 2003.

Looking for £200 + postage at cost