No, this is not another "how do I create a reflection" thread, but something slightly different. I need to have windows that partially reflect their surroundings and partially reflect an image. I know (I think) that using a blender node will do this, but I can't quite get to grips with it. If I was doing this in LightWave it would take me all of a minute, but in Poser I'm having some difficulty.
Can anyone point me in the right direction please? Oh, and I need to be able to adjust the amount of reflection of the image and surroundings to my whim.

Thanks