Retrofitting a Tab Bar onto an existing app

[TimC]

So I'm making a little app. Not too complicated - just a NavigationController pushing views back and forth. Based heavily on Apple's DrillDownSave sample code.

What I'd like to do is add a Tab Bar to the app, and incorporate the existing App into one of Tab Bar's views.

Has anyone had any experience doing this kind of thing.. and do you have any pointers or tips (or links to pages that do)?

Thanks
Tim

[TimC]

My own response to my question would probably be 'You should have thought about that at the beginning'... but I'm still willing to hear any advice!