You need to create a bump in the exact location of the 'window' (on a Mac you option-drag the transparency level -or entire shader- to the bump channel to exactly duplicate location. I'm sure that PC has a similar function) The window would have to be solid black in the bump to give you maximum depth. Check out how I assembled the 'Water Globe' shader in the free download section. On that one I created depth by duplicating the 'wires' to highlight, transparency and bump channels to fake dimension. Mark