Hope this is the correct place to ask a few questions. Installed Interchange and have the demo store, the next steps I want to take are as follows: 1- Changing the design/ look of the store. How? Can't find html pages. 2- Must everything be done through the Admin interface? 3- How can this be connected to Authorizenet? That's it for now, I thank anyone in advance for their assistance in the above! AJ