Well, I don't know about you, but I only want to have to ever do this once. It took me FOREVER to take the satelite image and trace the sides and add alpha. I had no idea what I was getting into.
Well, it's a texture of the earth, with the oceans all as aplpha. I'll leave the setup to the buyer, but I will say it turned out really cool. in PNG.
(I know the resolution isn't great, but when rendered with OSA, no-one's the wiser! ;)