Printing 8.5x11 and 11x17 in the same book

[Bruce Megan (Telex)]

Hello All: 
Many of my books have electrical and mechanical drawings interspersed
throughout them that are 11x17. Unfortunately, I can not shrink them to
8.5x11 because the integrity of the document is compromised. I have been
having some problems figuring out how to set up FrameMaker to generate a
post script file with both 8.5x11 pages and 11x17 pages so that I do not
have to make 2 post script files. I am currently running FrameMaker 7.2
on Windows XP. 
Is there a way to generate one post script file with two different size
pages in the same book?
Any help you can provide will be greatly appreciated.
Thanks!
Megan Bruce
Documentation Specialist
Bosch Communication Systems, Inc
Telex Communications, Inc
12000 Portland Avenue South
Burnsville, MN 55337
megan.bruce at us.bosch.com