Vista - Databinding Comboboxes in XAML

I'm databinding to a XElement (from a XML file) in XAML... All of my
TextBoxes are a breeze, it's just a simple Text="{Binding
Path=Element[Event].Element[Name].Value..., but I don't understand how I
would databind to a ComboBox. How do I get the the ComboBox to automatically
select the item whose text matches the Value from my Binding Path?

Any help with this would be greatly appreciated