Your header text is right against the side of the page. Put some padding in.
Where are the borders in the tables? It looks like 3 big squares.
The content block looks a little... barren. Everything is just kind of floating around looking a little lost. Add some defining lines, spread things out a little more evenly.
You do not have valid XHTML or CSS. Your CSS results in a recurring redirection. You should probably look into that.
At least your site has a clear purpose, something I've found surprisingly lacking in other sites here