This may be equivalent to asking how I can get to and modify "site" or whatever file it is that contains the HTML code for all those things I don't want (like the sidebar on the right for "widgets," the gigantic margins & narrow space for content, the "Blog" and other links across the top, etc.). I'm not stuck with that stuff, am I? When I go to the "Pages" tab(https://publish.comcast.net/pages) and try to edit the home page in the HTML Source Editor, none of that code shows up -- it only allows me to edit the main content portion of the page. I don't find the File Manager to be of help with this, either.
If you want to get more creative (or include less), you'll need to use some other page building tool. The Comcast tools are limited and not very customizable.
I've tried iWeb for the Mac. Many people are using Kompozer ( http://www.kompozer.net/ ) which is free and multi-platform (Windows, Mac, Linux).
