yafray light setup

hi i am modelling a house in blender and using yafray to render it, this is my first experience with yafray and the results are very good if it wasnt for a problem with the lights first i am using a light with 0.001 intensity cause more than this the room gets too lighted and is not what i want i ve started modelling in a very low scale the objects are as small as they can be i think that i missed in this i cant scale them up cause a mess occurs and the glow light is something definetely not easy to handle i dont know what to do to get a good illumination i someone help me i would apreciate it, thanks and happy new year!

down here is a picture from the scene:
http://i26.photobucket.com/albums/c132/greboide/1.jpg