This tutorial shows how I made the rings for the planet in Man-O-War

4	This is a different version, with no transparency in the initial fill, and no feathering on the selections, this will provide a very clear cut, opaque set of rings.
5	Now we can take the images into Bryce. "Import" the Ring .obj from the zip file, then click the small "M" to edit its material. We wish the main colours and transparency to come from our images, so click the buttons into DIFFUSE, AMBIENT and TRANSPARENCY, as shown in the picture to the left. next click the middle button on the bottom right, then the one on the top middle, as shown by the arrows. This will tell Bryce to use a Picture texture. Note: click the button on bottom right to select PARAMTERIC SCALED as the mapping mode, this tells Bryce how to align the texture and is very important.
6	Now you are in the Picture Editor! Click a blank spot to put your new picture into, then select your chosen image file. Your blank grey square now shows your image. If the alpha channel was set up correctly, in the middle of the three pictures, you will now see it as a black and white image. Black areas=tranpsrency, as you can see from the pic above.
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