Admin Area - asp.net

I’m looking for help building a user registration system for a website. An example of what I’m looking to build is at <[login to view URL]> ? The developer will need to provide a data model (MySQL or SQL Server) and the registration pages in asp.net. ? Pages or features needed: Self service account registration Self service user registration (note: an account can have multiple users) User roles: account admin, team lead, user Admin (super user) area to view and edit all accounts, catalog management Also, I need a simple shopping cart function that allows the user to purchase an item from a simple catalog and pay via credit card. ? I see the logical flow as being: A user registers for free 30 day demo account and gains access to a demo area After 30 days, the user elects to buy a package, selects that package from the catalog, and pays with a credit card. Depending on the package selected, single user, 2 user, 5 user etc, they can add named users.