Alumni Networking site similar to http://alumni.umich.edu

Looking to build a small business networking group online. We need an attractive website with contact management capability which allows the site to grow by user-generated content (adding events as in #5 of sample pages below). This could be based on a customized template, does not need to be an original design from scratch. DESIRED FEATURES: - Submission forms for membership application with credit card payment capabilities for dues collection - Login feature with different permission levels for read/write/edit with ability to: -Submit Event -Edit/Delete Event - Basic search feature - top-level drop down dynamic navigation menu - main page slideshow with up to 8 clickable slides (stock photos ok) - Main Page with 4 to 5 Links (expandable as needed): Join/Why Join, Membership Levels, Events, About Us - SAMPLE PAGES: 1. [login to view URL] 2. [login to view URL] 3. [login to view URL] 4. [login to view URL] 5. [login to view URL] Winner must be able to provide examples of sites you have built that meet the criteria above. Please only submit your bid if you FULLY understand the requirements of this project.