I'm not sure I follow what you're saying but creating a booklet in PM is straightforward.
Create your booklet as if you were reading on the screen.
Your document setup would look like this (sorry, I only work with ISO sized paper).
Then run PM's "Build Booklet" utility which creates 20 A4 landscape pages which is 10 duplexed sheets. "Build Booklet" attends to page numbering but does not handle images which spread over two pages.
Iechyd da! John
00:51 18/07/2006 BST