Ok, having thought about it. Can I have a bit of advice on this please.

Say I wanted to base my site on the 'Contemporary Green' one that comes with the default install. So that I don't mess up that original one I will create a classic2 customer folder and will copy the original classic into that. How many classic2 do i have to create to do this properly?

Or am I missing something?

Thanks for any help again.
FTF