I was expecting crappy code, but very nice minimalistic markup. I'd keep everything lowercase (like the H1 tag), give the style sheet something like "main.css" or "style.css", have more semantic names (not top, but #header... or something that implies meaning)
Oops, on to the actual design... I think the header (banner, masthead, whatever) should be around 100-150 pixels high, yours is around 200+. I would use a smaller font size for the graphic text, zero out the margins, add some images (of people?), add some more text, lower the left margin/padding on the navigation, have some hover effect...
Gj on using proper markup though.