Non-scrolling background image *and* a header?

[dhae_knight_1]

I really, really like the layout I have now, with one tiny little problem; I would really like to fix my background image so it didn't scroll and repeat, because, frankly, it sucks at tiling height-wise.

I found this: http://style-system.dreamwidth.org/22713.html, which unfortunately removes my header, but I can't find anything else.

Is it even possible? Or do I need to get creative and smush both background and header together into one massive picture and then make that one fixed?