Map Editor and custom planet images

[AngleWyrm]

Have the planets image mod 11c installed.
How do I get images into the map editor?

I have also been working on some new planets, and so far it seems to be coming along nicely:



Now I wanna see my art in-game! So how do I get my custom planets into the map editor?

Even better, I'de like the game to use some of the hundreds of planetxxx files when generating a new random universe. Is this possible? Is this what it ordinarily does? HEELLP! 10Q