how to render background image?

how to render background image?

In the button window.
Check BackBuf button +
There is file selector just below the Output Directory selection, Select the image.
Now Render, your background image will be rendered alongwith the scene.

I did try with node but the image do not fit to the size of the background…

Where is the BackBuf Button?
In witch panel

@Matt: Scene (f10), Render context, Output panel, second field down (sometimes prefilled with backbuf).

Wow, thanks man