I've had a lot of questions about the technologies behind the Accruent application that I've demonstrated during the keynote of the Developer Track at the recent Office 2007 / Vista Launch Events.

The mapping features of this application were built with Windows Presentation Foundation and Virtual Earth.

Here are some resources to help get you started building apps with these technologies:

I'm sure you're going to be able to build some awesome mapping capabilities into your next app, and these resources will help get you started.