Build Website w/ signup and login, multiple pages

We are two guys who are beginning an internet business. We do not have many technical skills. We have purchased a domain name already (from [login to view URL]). Here is briefly what we are looking for: We will need to create a website (template or not). First, there will need to be a 'register' or 'signup' feature where a customer will go to signup for our service. Upon registering and paying our fee, they will be given a username and password. Obviously then, our site will require our customers to LOGIN to the site w/ their user ID and password. Upon logging in they will simply be directed to our home/index page where we plan on having lots of different info including widgets (if possible) for our customers. There will also be numerous links, linking to other pages of our site. Also, we are in the process of? choosing an Auto Responder program so your advice w/ that will also be helpful. Basically we are looking for someone to setup our site and get it the point where we can just edit it ourselves, but as we said, we need someone who can show us how to do this once the site is up. Any questions, please feel free to ask! Thanks!