Good tutorial and resource to create skybox with blender

Good tutorial here:
blenderartists.org/forum/showthread.php?t=96131
Free resources
blenderartists.org/forum/showthread.php?t=24038

The skybox make from the template:

weee skyboxes!

What is a skybox?

en.wikipedia.org/wiki/Skybox_(video_games

Thanks for the links! Another approach to making skyboxes using free software is what I do, using Terragen:
developer.valvesoftware.com/wiki … h_Terragen

Does using Blender to make skyboxes have some advantage over using Terragen?

EDIT: Actually I just realized that guy is using Terragen to render skies:
blenderartists.org/forum/showpos … stcount=27

So I don’t see the point of rendering the skybox in Blender for a terrain scene, but it would certainly be useful for a scene like a city that you would need to model in Blender.

(also, it confuses me that he gives out images to be helpful but then kinda acts like a dick when people ask follow-up questions)