Thanks clint e,
I have already spent an hour or two in every forum in ST including this one.
Trouble is it's addictive, just like the net it takes you to other links & so on & so on!!
I have already printed off loads of info from these pages for 'hard copy' reference because my memory sucks!
Here is another link I found today,
http://www.dself.dsl.pipex.com/ampins/ampins.htmCheers,
willie aka mick or mick aka willie