Thanks bill! Not sure if my post made sense, but I'm actually looking for something that I can drop into an existing HTML page instead of having to redesign the site from scratch on top of MT. The only thing like this I've found is Wikiarea (google it). Neat stuff for sure, but it's a hosted service so I'm not lovin' it.
No site redesign is necessary. You only have MT create the page(s) in question.
Wikiarea still requires a back end to operate like that. You need a system of some sort to edit the data on the pages. Whether you run the scripts yourself or rely on a third-party you'll need to run something to get that functionality.