Is there a way in Poser to have lights in windows with the light showing on the outside?

If so is there a tutorial for this

Thanx for any help

i think you need to be a little more specific, do you mean that a room is lit, and the camera view is from the outside of the window, i have done a little example to see if that is what you want, the only light is one point light positioned in the room, all other lights were deleted and the render was run with indirect lighting on and raytracing set on the point light, light constraint inverse square

And I must add, please post which Poser version you are using.  Mysticeagle mentioned specific which may not apply to your particular iteration.  It will help us tremedously so we may give you the best advice.

If it is only for a few rooms you could put a point light in each room to illuminate the interior. Can you be more specific on exactly what you are trying to achieve, what the room behind the window is like, what type of lighting you want represented, and whether this is a daytime or night time scene, etc?