Nice & clean. However, the header doesn't look right to me. Are you using the same font for your header with the rest of the page?
Yeh, I wasn't sure about what font to use. Should I use the header font (Verdana) or the text I used (arial)?
Maybe try and balance the design by placing something under the nav. I dont think the header is that bad though. Maybe add some text or something else to fill it in. I think "ext" is supposed to be "text". Overall, not bad.
This my new version, its only a screenshot though because I am going to release the full thing filled with content.
It looks a little boxy overall. I like the layout, but it just seems to me their are too many boxes.......