Russ, does your existing spare PC use SDR or DDR Ram? - newer boards are likely to be DDR only. You may need to decide whether you want a newer board that will have stuff like 333FSB, but will need new memory, or an older one that will still use SDR Ram.
The specs on this bundle would suit
http://www.maplin.co.uk/products/mod...50&modulecode=
although you are likely to get it cheaper elsewhere
Gaz