Thanks Jason. That will get me off to a good start :-)
Having seen a tutorial about how to make a theme from a page or template, enabling me to forget the template mentality seemed very good useful.
I've not been a big fan of templates, since they never seemed to be very flexible - if for example you wanted to have one menu system running and a few layouts (eg: 3 columns or 4 columns) in different places.
Once I have converted the extension names, is it a good idea to send you the link and discuss whether or not to make a theme please?
The only bit I'm nervous about at this point is whether or not the P7 menus will still work, and at what point will bits of the site need to become 'includes' and what the implications of that will be.. If I make a Theme - a bit later on, will the menus be converted to 'includes' or library items?