XML Knowledge Base

A web based knowledge base that assembles individual xml content into a single repository. It assembles each page based on xslt and asp scripts and displays them to the user. An index is also available that helps an individual find specific blocks of content based on metatdata. What is needed is an interface to enable an administrator uload content into this environment, easily currently it is done somewhat manually. The xml content also needs to be validated prior to posting. Attached are a couple of screen shots of the application. I also need to get the entire website migrated to a php, phyton or Ruby environment so that it can iperate on any platform. Currently all the XML files reside in a flat file basis I would like this to be migrate to sql database.