I have just posted a Sample WPF application that show you how to add Windows like Task Swithcing to your WPF MDI applications.
http://karlshifflett.wordpress.com/2008/04/10/wpf-sample-series-wpf-mdi-task-switching/
Sample also has video to show off the features!
For anybody who doubts that WPF makes good LOB, I would suggest checking Karl's series out NOW - you owe it to yourselves. Big time.
Agreed - Karl does some amazing things and if you can't get a chance to see him in person, at least check out his video tutorials.
Pete & Lou,
Thanks for the encouragment. You guys and the best at what you do too!
Have a great day and thanks for the hard work you put in,
Best to you both always,
Karl