Migrating Legacy WPF Applications to Prism - Part 1

This is the first of several posts on my journey migrating a legacy application to use the Composite Application Guidance for WPF, which (like Brian Noyes) I prefer to call Prism, mainly because it's shorter, but it's also cooler! I've watched the "Brian Noyes on Prism" dnr TV episode intently, read through the guidance documentation, I've done the hands-on lab, all of the quick starts and dissected and analysed the StockTraderRI sample application, so now I figure I'm ready to start cranking some Prism code for our legacy application.