Always worth doing a search before asking Guest LC.

Put Paul McNeill into the search engine at the top of the page and you'll find there has been some discussion here in the past, probably as much as you'll get if I recall the previous thread accurately. Then if you need more than is there you can be more specific in your question, probably even continue the existing thread.

I can't quite recall how to put links to the old threads or would have put one here for you to save you searching. Links to web site I can do with one hand behind my back......