https://sfzencenter.secure.force.com/membership

This is the primary Membership form for SFZC that is hosted by Salesforce and uses C&P to process all transactions.  Note the URL of the form, sfzencenter.secure.force.com tells you that the site is hosted on force.com.  Now let's take a look at how force.com manages the site and all pages.

Here's where you will find the SFZC "site". A site is a collection of pages.

You should not need to modify this, other than perhaps the site contact user.

Here you see the site properties, and all current pages associated with it.  A site has lots of pages, include thank you pages, error pages, etc. Think of this as a website's "root" folder.

Here's an example page. This is the Membership page, which is the live page we showed earlier in this article. You can see that it's primarily HTML with a small amount of visualforce at the top. Anyone with HTML skill can easily modify the page as needed. All changes are made in real-time.

Here are all pages currently created for SFZC.