Data binding tutorial Blend 3 mismatch

[scmiles]

Hello, I am following along on the advanced tutorial for data binding with XML, and I am using Blend 3, I know the tutorial uses Blend 2. I was hoping you could help me find the "define data templates" equivalent option that is not present in Blend 3, for the step that modifies what elements from the xml data source are displayed in the listbox.

http://www.kirupa.com/blend_wpf/xml_databinding_pg3.htm

Thanks