I checked "transparent" under the Film tab but still not showing.
I can find out what I did wrong.

the file:
[<img src="http://blend-exchange.giantcowfilms.com/embedImage.png?bid=2106" />](http://blend-exchange.giantcowfilms.com/b/2106/)
Can someone help? :)

(Edit: my question was if it is possible to render the Background image without compositing)