Hiya
Michael_Davies 
A few things here. First off, it's ok to draw inspiration from someone else's work, but using the same image and just changing the text around to suit your needs is a no-no
(in the artistic-web world we call it "ripping") An alternative here would be to contact the site webmaster where you found this "banner" and ask them if you could manipulate it to use on your site.
Now, that being said, (and I'm sorry if I come off a little harsh about it, but i've seen it too many times) If no one steps up to help you out, I'll have a go at it when I get some time
~Peace
DC