This is an application proto-type for document collaboration using WPF and a document viewer on the right which uses XPS document.
Chat interface can be built easily using either MSN/Communicator API's and everything gets saved inside a custom list in MOSS2007 as archive.
A picture is worth a thousand words so here is the screenshot of the proto-type and the idea so that its easy to understand.
Many more features thought of but not yet documented here... 