Realitic sky

Hello,
I was looking for a realistic sky for my animation. What is the best way to create a realistic sky? I found an old thread here:
http://blenderartists.org/forum/showthread?t=8369
but the python version of the plugin doesn’t work anymore (crashes blender).
This is a very old thread anyway, but the sky in the render looks awesome. Can anyone suggest me something?

Thanks!

get the trunk version of Blender, there’s already a sky and atmosfere option with the sun lamp :slight_smile:

http://blenderartists.org/forum/showthread.php?t=135053