Top section is nice, but under the copyright - the About section looks as though its just been cut and paste onto a bare page - it needs to be within the same confined width of the main content, to keep the look consistent.
I'd recommend keeping all text on a white background for easier viewing for those with poor eyesight! (me)
The main table is 1000pix - slightly too wide for 1024 res screens, the standard for sites ATM - so I'd suggest reducing the width to say 970pix - simple rescale on the logo image to suit.
Place the About within the main table in a section on its own with the same white background, so it stands as separate box, but keeps the page's style.
You can create nice looking section using CSS, and its much easier if you save your styles into a style sheet - and simply link it to the page - and every other page, for a nice uniformed look.
You can then easily create nice header / footers that use the same style and look from one style sheet.
Sorry if that's a tad long winded, I love the DD site, and hope these tips help.
DP