How to Program Tab Bar Multi Tab Preview like IE on Windows 7 in WPF?

IE8 on Win7 http://akashkava.com/blog/wp-content/uploads/2009/09/IE8-on-Win7.png

Windows 7 has a new taskbar and IE can display multiple tabs in the taskbar preview, most programs that have not implemented this new api show only one preview, I have an application where I have multiple tabs, and i want to show every tab in this preview.

Let me elaborate on this in more detail, I know that every new window automatically creates a new window in the switch, but how to override it using the tabbed interface in WPF.