Thanks Harry. You seem to pop up all over the place! I feel a bit like I'm in one of those hit-the-gopher games. You probably know it, a gopher pops it head up from a hole and you have bash it on the bonce before it goes back down. Everywhere I stick my head up, there's a HarryT!
Thanks for the heads-up on the Linux angle. Like you imply, hopefully others can lay a few bricks on the foundation for me.