Totally Zenned, hope you are still here. :)
I'm adding all the files now for my custom template.
It's not as bad as I thought. But I'm wondering....for instance, under:
includes
languages
english
modules
order total

there was already 'classic'. So I added my new template: CustomAventine

Now, before I added the new folder, CustomAventine...there were already a list of files under there ie. ot_cod_fee.php, ot_coupon.php and etc etc.

I don't have to copy all those folders, right? They will be used by the new CustomAventine template without me doing anything to those, correct?