Well what I think we can offer is on two tiers:
The first tier is like a framework where the layout is quite fixed, but you can add as many pages as you like within the framework. An example of this is what Chris 1066 has been testing for us.
An example:
http://www.RootsChat.com/history/hastings/(the colours and the menu items you can change by the way)
The second tier is where we simply give you an username and password to "upload" your webspace, then you can do your own thing.
Also, we might also offer something in between the two which is a more sophisticated (but more complicated) system called Mambo which allows you to manage your own pages.
Whichever one you choose, it will be free, and on an incredibly quick webserver (with no popups either!)