It has just occurred to me that all of these short posts on my virtual network installation are the equivalent of wittering on a blog :)
I'm in the process of building a member server on my domain, with a slight hiccough at the moment. For some reason the member server isn't joining the domain, but this could be because I've forgotten what I called it!
I'm running the two VPC's together in a configuration suggested by Simon Guest, with two NICs per machine.