Background Image in Render Output

An old feature of 2.4 I was fond of, the background image when rendering. I have been unable to find it in 2.57b

I do not mean the background image while in the 3D view, i mean the background image that you render will be displayed over.

http://wiki.blender.org/uploads/6/6e/Render-panels-output-242.png
This is where it used to be set in 2.4 Can anyone tell me where it is now?

I can’t find it either, but you could add it as a texture channel in the world buttons and set it to ‘paper’

if you press N and scroll down you’ll find it!