how to autoscroll a stackpanel on mouse over like ZUNE xaml C#?

I have two questions. I want to create an application similar to zune. Zune has a menu which autoscrolls on mouseover. I want to create that menu for my application. but i dont know what zune uses and how to autoscroll that unknown panel horizonatally. i am using modernUI for WPF plugin.

Question No 1: What does Zune uses? stackpanel?

Question No 2: How to start horizontal auto scrolling of stack panel on mouse over?