there's a program called Lunar Cell from Flaming Pear. Now I'm not sure if this is a seperate program, or a Photoshop plugin (in which case I'm out of luck..;). They have some other things like Solar Cell, but I think Lunar Cell does moons.

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)