Multi-Lingual Corporate Website/Online Store with CMS(repost)

We are re-making/consolidating two existing websites ([login to view URL] and [login to view URL]) into a single website to be hosted on an Apache web server. The site will require a robust CMS (possibly Joomla) and an ecommerce shopping system. The site content (and corresponding CMS) is multi-regional and multi-lingual. Meaning within each geographic region, we have specific products available to that region, and our content for that region may be available in more than one language. Product pricing is specific to each region as is currency. The new site will include all existing functionality currently existing on [login to view URL] and [login to view URL] including multi-regional, multi-lingual content. Regional products. And customized websites for our affiliates. Our existing website replicates itself and takes orders on behalf of our network marketing affiliates. The new websites should be easily skinnable using XHTML and CSS for layout. We will provide the designs, but will expect the developer to implement them. We will provide the content and control all business logic (such as product regions, product descriptions, pricing, tax, order history, etc.) via .NET web services that we will provide. The developer of our new site will need to design a system to interact with our web services and integrate that data into the new CMS. We will also be integrating Facbook and social media feeds. While not using Facebook for authentication, users will be able to associate their user accounts with their Facebook accounts and push activity updates into their Facebook feeds. Please see the attached documents for a more detailed description of our project as well as the designs we are looking to implement.