background?

how can ichange this blue background to an image???:ba:

Add a plane with an image texture?

have another idea?
ps i want to see the sky but in textures you cant see them because they are in black and you ned to do alot of sun and lights,

???
Enable the “shadeless” button, maybe?!

where is this button?(sorry but i know alot of stuffs exapt shadeless button…maybe more stuffs…)

Well…it’s better that you tell me what you want to achieve!
Here’s a little tut about “backgrounds”:
http://otothecleaner.free.fr/tutorials/LevelDesign2/level5/level2-5.html
Bye