Ahh yes, there are only two templates available now: Fixed and Liquid.
I've updated the documentation... but you first need to apply the fixed width template to the page to convert it from a fixednosidebar to a fixed template:
# Select Modify -> Templates -> Apply Template to Page
# Choose the fixed template from the list of templates
The documentation has been updated to reflect that, and hopefully get everyone onto the fixed template now:
http://ucommdev.unl.edu/webdev/wiki/ind ... umentation
Thanks for the note.