wHow do i make the the sun lamp light pass throught this window? How do i make this spot lamp light go through this window? -The window in the wall is just a hole in a plane with some meshes in front of it.
Sorry for my bad english.

My sun lamp is pointed at the window like this:
Simply rotate the sun lamp until it's at the correct angle, so the light will come through. If you are using a spot lamp, make sure the lamp is outside of the window.