Hi John, You asked: >I wonder if you have the web site address that you mention so i might have a >look. > It seems as though Patrick has beaten me to it - he said: >The website address is www.steammechanic.net > It is a very good web-site, but the really interesting part of it is the ever-increasing list of books available as pdf downloads. Cheers, Roger Mason, in a St. Agnes waiting for the STORM. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.