Full customization of the layout of the sites is now achievable, all the way down to the html levels, not just css, but full-on access.
If you have administrative privledges on your site, be sure to see the new additions to the "Administrative Menu"
1) Administrative File Uploads
2) Advanced Layout Options
While the documentation is a little sparse at the moment, I'm working on getting it more up to speed, and examples are provided as well as a quick overview of available options (embedded commands).
To see the power of the customization, see the PiaS site at
http://www.poopinashoe.com (or
http://pias.dkpsystem.com ).
I've attached the Layout and Menu Files used to produce the PiaS site.
If you have any questions, I'm here to answer your questions.
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The day Microsoft makes a product that doesn't suck is the day they make a vacuum cleaner.