Try these threads:

http://www.renderosity.com/mod/forumpro/showthread.php?message_id=2777767&ebot_calc_page#message_2777767

P6 Lighting without Lighting using gather node

Creating bioluminescence with P6 shader nodes

Pearlescent paint

make things glow without lights - Gather Node

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi