Just a thought.
I have available a number of second-hand server boxes. These machines have recently been de-commissioned (from their previous life in a call-centre), but it occurs to me that they would make for a very robust and cheap PC (with very little effort and cost) if anyone was interested. They could equally be commissioned as a server of some sort for either home or office.
The machines themselves are HP Proliant ML350 G3 or ML370 G3. (specifications and descriptions at these links)
http://h18000.www1.hp.com/products/quickspecs/11430_div/11430_div.HTML
http://h18000.www1.hp.com/products/quickspecs/11450_na/11450_na.html
Outline Spec As They Are At The Moment:-
1 x 2.80Ghz Intel Xeon Processor Dual Core - Memory: 0.5 GB - HP Smart Array 641 or 532.

So, what would you need to make a functioning machine Hard Disk/s. Monitor, Keyboard, Mouse, Operating System. The Proliant is a very robust workhorse of a machine, which will run pretty much any operating system that you choose to chuck at it. They machines have been around in various guises for a good many years, and so spares are plentiful and cheap, and the user/administration knowledge-base available is vast.
I would be looking for 30:00 per machine as they stand, and I estimate that a functioning PC could be put together for around 100 or so (even cheaper if you have an old monitor kicking about). Freight/Postage would need to be considered as these boxes weigh in at about 20Kgs a piece, (I am based in Hampshire).
Please drop me an IM if you want to ask any questions or to discuss the many options.


Aidan