Rendering an indoor scenes in Luxrender was easy, at least it seemed to me.  I didn't think anyone needed a tutorial.  My very first render from LuxRender was an indoor scene.  I had a couple of one-sided squares with ambient value set to greater than 1 in the material room and then I set those materials as emitters when exporting.  That's it.  Then those emitters will show up as lights that you can adjust while you are rendering in LuxRender.   For example, all the lights in this render are just materials on the hanger OBJ with ambient value set to greater than 1 in the Poser material room and set as emitters in Pose2Lux.

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