Have the following for sale, prices include delivery. Check out my ebay id: paulbeauchamp for feedback (344 100% positive).
MiniATX motherboard (QDI P6V8601A Advance 6 - onboard sound, VGA, USB & LAN), comes with a 1.0Ghz Celeron CPU and 128mb (2x64) RAM - £22
Seagate 10gb Hard Drive - £7
(will sell all of the above, making a nice cheap PC for £25 posted).
2 x D-Link DFE-530TX PCI 10/100 Ethernet NICs - £6 for the pair
Or will swap the whole lot for a socket 775 Pentium 4 CPU - 3.0ghz+