Hi!
I can build such site. What platform do you prefer?
I lead a team of professional Web Developers, specializing LAMP (Linux, Apache, MySQL, PHP) + work with different open source solutions e.g. HTML5, CSS3, JavaScript, jQuery, CMS (Drupal, Joomla, WordPress), E-commerce solutions (Magento, OsCommerce).
We have worked on such clients as IBM Canada, Warner Brosers, Lipton. In whole, we have successfully completed more that 100 projects.
You can contact me anytime to discuss any project with me.