Install FlashBlocks (cms) or XML in a Flash site

The current site ([login to view URL]) is a full flash site. I need the ability to update and change the content. I am interested in knowing the options for being able to accomplish this. FlashBlocks seems interesting, but it seems the site needs to be taken apart and built again with FlashBlocks integrated. XML elements are also a possibility. It might be that the updates and changes I would like to make have to be ongoing. There are no major structural changes. I will need to add a few pages to the menu, however.