In http://thewpfblog.com/?p=69 you can find an interesting post and source code example of integrating WPF/e and Flash, more details in http://blogs.msdn.com/tims/archive/2006/12/08/the-quot-wpf-e-quot-developer-environment.aspx.

Also in http://blogs.msdn.com/tims/archive/2006/12/08/installing-the-wpf-e-developer-environment-on-windows-vista.aspx you can find a step-by-step instruction guide setting up your development environment for WPF/e applications