Hi again Joe, and thanks for helping me again.
Ok, I originally had the BG image added to the home.ascx and skin.ascx files, in the following code;
<style type="text/css"><br />
This worked perfectly for all pages that are in the main menu, but any pages that were in dropdowns (child pages), were not displaying the BG image. Just a little while ago, I removed the code from the home and skin.ascx files and added it directly to the page settings/advanced/SEO -->> page header tags, this again work perfectly for the parent pages, but no luck with the child pages. The Background for the child pages are still just plain white.
(Hope this makes sense)