I perfer doing the Nebulae in Bryce itself I have better results and youcan layer differnt colors and textures to make soemthing really interesting. I am the odd man out on this but I often do pics with Nebula textures and personally I find what can be doen in Bryce is better then other programs. Nebula have a sort of fiberous look to them often and the photoshop or other generic way of producing them does not do that part they just come out as a blur they are not; just like when you look at the northeren lights it is not a blur like the photos but a series of strands and moving like a glowing curtain in the sky. Said my 2 cents worth. Sorry I just think Bryce does it better.

The wit of a misplaced ex-patriot.
I cheated on my metaphysics exam by looking into the soul of the person next to me.