Sky

Unity Engine
1

I have been working on my first project (simple platformer) and was wonering how to change the sky image (i can only seem to change it into a diff color)

2

Unity comes with several different skyboxes in the standard assets. Just go to Edit >> Render Settings >> Skybox material.

Here is some info on it:
http://unity3d.com/Documentation/Manual/HOWTO-UseSkybox.html