I really like your site. I actually like the forum. I would advise to change the corners of the top and center divs on your pages. I think that the border-radius is a bit too large and that is why the corners are looking pixelated. I might decrease the border-radius by 2, but other than that, I really like the site. Good work.
I'm sorry that I am not web smart at all. However, would it not just be easier to use a div that he can easily change the dimensions of, instead of using a background graphic?
<table style="background: #C40000; width: 920px; height: 600px; border: 1px solid #FF0000; border-radius: 8px; padding: 10px"> <tr> <td valign="top"> The content would go here and be the same effect as what is on his site. </td> </tr> </table>