Your image gives a "hotlinking blocked" message? But I think I know what you are looking for. You mean, you want a "soft glow" around the light, right?
If the effect you are desiring is what I think it is, the command you want is "media". You can make pure emissive media, which is like a self-illuminated fog, or you can create an actual light on your model and use a combination of photons and the transmit command to make a transparent container full of media glow in response to the light.
A couple of links with some sample files:
http://povray.tashcorp.net/tutorials/ww_media/
http://www.travelnotes.de/rays/media/media.htm
http://www.willamette.edu/~gorr/clas...edia/index.htm