ExtJS Taskbar

Hello, I'm looking for an ExtJS expert who can do you quickly what is difficult for me. I've a viewport, with on the north my toolbar which open new [login to view URL], an east panel, with some content, a center panel (empty, the desktop background), and a south panel. I'd like to: - add a taslbar in south part - this taskbar must working like a MS Windows taskbar : display all windows, and on clic, show ext window.