Regarding your other question, anything glows allows you to make a light source out of an object.  Not sure what that would have to do with Indirect Lighting.

I find anything glows to be a hassle.  I usually use glow in the shader to make the object seem to glow, then put a normal light near the object to produce the actual light output.  If you have a texture for a light, or flame, you can use the same texture map in the glow shader and get a nice effect.  Use a 0-100% or 0-1000% modifier to adjust the glow.

Klebnor

Lotus 123 ~ S-Render ~ OS/2 WARP ~ IBM 8088 / 4.77 Mhz ~ Hercules Ultima graphics, Hitachi 10 MB HDD, 64K RAM, 12 in diagonal CRT Monitor (16 colors / 60 Hz refresh rate), 240 Watt PS, Dual 1.44 MB Floppies, 2 button mouse input device.  Beige horizontal case.  I don't display my unit.