Nice one, Michael - well done for persevering. I think I probably hindered more than I helped, my thinking was a bit fuzzy yesterday, and I sent you off on a bit of a wild goose chase, and probably made it seem a lot more complicated that it was.
It all came down to a few lines on one page in the end.
All of the store admin is done via the website you have just done. If you log in to the Admin area of your site - Admin/ - (Admin with uppercase 'A') using the admin name and password you entered in your WA_Globals file (Lines 116-117) you can have a look round at the functionality.
Go through the Setting up your catalog PDF and all the other support material at powercms/
So, - setting up the site definitions next then?! There's a load of benefit to knowing your way round Dreamweaver and getting to know how to take the grind out of all the processes.
I was just ready to log off, and I'd thought I'd have a look to see how you'd done. Pleased you got there.