Overall a good idea for a site, but the overall design needs working on I'm afraid. Sorry to appear negative, but comments are always helpful I find. It would be nice on the eye if you stuck with one type of font style, instead of having loads of different fonts with different sizes.
Your left navigation font could be a bit biger, as these are quite small, and I would make your main text on your homepage the same size as the navigation bar, so it does'nt look out of place.
I found the colours overall quite appealing - no comment there - very nice on the eye.
You have quite a bit of wasted space on your home page on the right hand side, and I feel that creating a table, would eliminate some of this space, and so you would'nt have to scroll as much.
I hope this helps.
Scott
www.scott-e-xperience.com