Help with background image when resizing window

Hi,

Can someone help this newbie out?

How do I make my background move along with the images I created when the
browser window is resized? Or: how do I glue my images to a particular location
on my site? :-) Check this URL http://www.verweggistan.com/help.html to see
what I don't want to happen when the window get resized.

Thanks so much!
Syl