A lot of interest in this thread so being the kind and helpful person that makes you all like me, here is a run down of my own system.
I live in a big bungalow alone, was going to downsize when the wife died, but with the property crash I would have blown my brains out.
Just overhauled my system.
There is a nice big room at the back I use as an office, but expensive to heat in the winter as its at the end of an extension, so i use a little study where I build my lamps. The window is onto a corridor so cheap to keep warm and snug.
Anyway, Office has main computer that acts as a server, although only running ordinary Win 7. Same desk has DSL router and Ethernet hub.
Main computer built around new AS Rock 880GM-LE FX £55 NEW off eBay seller, SH AMD dual core about £18, 4 GIGs of brand name memory about £40, all eBay again. HDD is an half terra I had in stock. Two network cards, one 169.254 the other 192.168 to the DSL router.
In the study a machine built around bits and pieces, a SH Asus board of ebay again for £20, 4 gigs of DDR2 RAM off a network I updated, a 175 gig HDD I was already using. Its connected to both networks
Also in the study the Win 2K machine described, connected to the LAN only.
RJ45 patch in hall holds a £12.50 of eBay Cisco access point, so I can use my netbook (£75 off eBay, wiped and win reinstalled) on the WiFi while lying on my bed.
I have a spare Win 7 machine not in use, again an 'all spare parts'
El Cheapo sophistication
My avatar is a poor likeness.