So far my external css file, looks like this:

BODY {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px 0px 0px; PADDING-TOP: 0px; BACKGROUND-COLOR: #FFFFFF
}
BODY {

I want to change it so that I can use a image as my background, I know how do do this in dreamweaver, but how can I include it in a css style sheet. I assume I need to replace the background colour bit, any advice would be great?

Thanks
Michael Prosser