i've been trying to make a decent glass material for the windows on the appachie but can't get any to look right. Any ideas would be a great help (snap shot of a render network would be even better ).

Also if your using mental ray and hdr images as the light source, the sky texture doesn't render, just come out as a series of blocks and a few crappie lookin flat clouds. Does anyone know an easy way to rectify this problem?

thanks in advance

f/