Question about Listview, XAML, and hover.

I have a listview in my app (grid style) that is created in
Expression/XAML. I need to be able to detect the item in the listview
over which the mouse is located. I'm trying to pop up an asp form that
has information releveant to the element that the mouse is over.

I have a datatemplate with a stack panel over one column of the grid,
and I could use bound data; however, I can't get the bound information
into the code behind since the C# code behind won't recognize the
datatemplate or stackpanel names that I give it.

Thanks for any help you can give me,
Noah