The idea is to create a SilverLight 3 Application (not a web part) that will be used inside SharePoint 2007 (not a web part but a full aspx page that will be called from a Sharepoint feature), for example, a silverlight application that lists all documents of a SharePoint document Library, and when double-clicking an item it will display it.
How do I use the SharePoint object model (spsite, spweb, splist etc...) inside this SL app? Is it not possible?