Indeed a very fine design. It might be my browser (safari) but there seem to be some rendering issues, did you test it on Konqueror or Safari? The navigation looks strange; there are three items ("what we do", "service coordinators" and "contact us") which use two lines instead of one like the other. For these items, the underlining overlaps the the orange bottom line in the navigation bar.
Also, the help link doesn't have a left margin and since it appears directly under the copyright statement which does have one, this looks kinda strange. And also this link overlaps some line at the bottom of the page.
I have attached a screen shot, hope it will be usefull for you!
Anyway, very nice design. Also like the color scheme, very classy!
Oh and I would try a different font for the navigation, but that's just a matter of tast!