Div help

[PinkFM]

How do you put a background for a div?

Like I want the image in the background so I write over it...anyone know how?

www.noneck.vzz.net (http://www.noneck.vzz.net) is the test of it

[PinkFM]

Sorry for double post, also forgot to say how do I center the whole layout aswell.
Thanks
+rep if you help