Okay, I see what you are saying. I have a whole box of the Enterprise 11x17
brochure paper that I have never gotten around to using. I see I will have your
problem.
You cannot expand the Specialty Paper templates, I tried, it simply doesn't
work. I tried with every version of Publisher.
The images for the templates are not high resolution, but you could use them on
the Master Page as a guide. They are found in a folder similar to this
C:\Program Files\Microsoft Office\OFFICE11\1033\PUBSPAPR
Before you go to print, check "ignore Master Page" in the view menu.