At this point in the book, we've built the Six Bookmarks application to run natively on Android and iPhone and also built the generic web application. We're now going to look at building the Six Bookmarks application for Windows Phone 7. In this chapter, we'll build the logon form and the infrastructure for calling up to the web services. In the next chapter, we'll look at downloading the bookmarks over the OData service and storing them locally. In the third chapter of this section, we'll look at sending the changes back up over OData.