Homepage - Large size logo, briefly identify our three target audiences: interns, supervisors and clinical managers. Those three should have a bit of text and a link to content outlining how we can help them. The goal of the homepage is to allow the site visitor to self-identify as one of these (intern/supervisor/manager), and lead them to a path of marketing content customized to their needs. I imagine something like beanstalkapp.com (but way different colors and design), how they have three major links in the center, in a horizontal alignment. We favor a horizontal nav menu,
Content page - A mixture of text, images, and potentially video, to deliver marketing content. The general feel should be like going through a feature tour, with "next" and "previous" buttons somewhere below or above the content.
Signup and payment form - a form to collect name, email, address (optional), and enter payment info. The payment info should be visually separated a bit, so that we can easily remove it in some cases (for some clients the service will be free).