I emailed the Microsoft Office Live folks to see if they could tell me how to edit the HTML, and they replied:
Microsoft Office Live does not support stand alone HTML code designing. HTML code designing can be accomplished using Microsoft Office FrontPage 2003. Currently, only the Microsoft Office Live Essentials subscription supports publishing the website through Microsoft Office FrontPage 2003.Looks like you have to pay if you want to be able to change the under-lying HTML, and then you have to use FrontPage. Blah... Looks like frankmccown.com will not be getting much attention in the near future.