Design Upgrade

I'm looking for a solid designer to help me give my site a better look. If you see a way to improve my site design-wise, that looks better and more professional than it is now, and if you can implement it, I'll pay you for it. Let me know what you can do. I'm serious, I really need to improve the look of my site. Site can be found at: [login to view URL] I especially think I really need to put something in the place of that big green thing in the upper left corner of the site (showing which page you're on). Usability and simplicity, and a unique but professional look are key factors for me.