Full screen - no fake, please

Hi, I’m trying to make a full screen flash site like www.wash-design.co.uk/.

The problem is to make a background image in full screen but all the content in normal size (I’m using pixelfonts). If you make one from Kirupa tutorial you have to make a big bg-image that won’t resize and for me that’s a fake.

Do You know how to make one?

Regards,

Dinsdale