Again, it's always a matter of taste, but my only suggestion would be to add more of a left margin to the nav. bar. (Since the page isn't centered, that links sections seemed too far too the left.) If not, maybe a light background color to set it off from the main section.
Only other thing - I watched about 1/2 of the CSS-P "viewlet" and got a typo for 'ya: "simplY duplicate header..." - think it says 'simple'
Must add that for someone who learned .css 'from scratch', that tutorial would've been swell a few months ago! (But instead of Dreamweaver I've been using the free WebCoder4, which is a nice step and some above Notepad.)