Thanks, that's great, and exactly what I needed to do. I have a follow up question, however:
I'd like to be able to have people click on the selected tab at the top in order to be able to get back to root of that node. Once a tab is selected, though, it's not a link any more. It shows the link where it would go in the status bar, but it's not active. I tried setting it with code:
RadTabStrip1.SelectedTab.NavigateUrl = smn1.Url;
but that didn't do anything. Any ideas of how to do this?