Hello Kristen.!
When you look at there forumsite at
http://www.turntool.com/forum/viewforum.php?f=16
You can see, that it isn't the most used program for Archicad.
I wonder why?, because it looks pretty ok to me, and easy to use.!
They mention a problem of showing shadows when importing files from archicad. 3d studio has a feature called Texture baking, which solves that problem.
But they are working on implementing it in a future turntool viewer.
I am too curios of seeing some example made in Turntool.
Martin