H Barry,
Thanks for the kind words. I can't say that I would recommend doing this yet, as a project it will certainly keep me busy for a few months and I am enjoying every minute but it is a lot more involved than it at first seems. I could write a book on what I have learned so far and I have only really scratched the surface. If the end results are successful then it will all have been worthwhile but at my rate of progress it will be some time before I know for sure.
Tweakie.