I need a skybox "above the clouds"

something similar to this.

http://secondsightstudio.com/dwblog/wp-content/uploads/2009/09/Skys00023_CloudsBelow_36x24.jpg

Use that?

Not really a good choice.

Thats not the right size and would cause horrid stretching.

http://www.fpsbanana.com/texturecats/28
Try some of these.

^Amazing

http://dog.fpsbanana.com/ss/textures/2345a.jpg

Double thread? http://www.facepunch.com/showthread.php?t=865862