There is an existing site, http://www.cccbalmain.org which is functional but not great. The new site is under construction at http://test.cccbalmain.org/, which you can see is rather.... well, under construction. However, the structure has been created and has been extremely thoroughly thought out and based on thorough research. This is no fly by night "oh I think this will be good" job. The fairly complete wireframe/structure is at http://www.useyourweb.com/cccbalmain/. This IS more or less final, definitive, and decisions can be made on this structure. However it is a wireframe, and no design hints should be taken off it, it is purely about structure and content, NOT about layout/design.
We can go to 1024 pixels wide, how to present the navigation is part of your job.
We will be using the template you can see at http://test.cccbalmain.org/, but modifying it heavily to accomodate your design. While you can use that as inspiration, and that is our preferred structure, if you have ideas that fall outside that, don't let it be a hinderance.