Thanks, I found it.

Thank you for your quick response, but I'm sorry, I cannot find a thin glass preset. Is it in the same menu as the glass material? Also, is there a good discussion or tutorial on rendering glass or windows that you can direct me to? Thanks!

What would cause glass to render black. It happens when doing interior and exterior renderings. I am assuming that one should be able too see an exterior scene from the interior and the interior from the exterior. I tried using the standard sketchup glass and the skindigo glass preset.