Using PDF Creator you can easily insert documents or specific pages into an existing PDF document by using the Merge feature.
# Insert new page at page 5 of a 10 page doc #
1) Using PDF Creator print pages 1-4 of your PDF doc to a new PDF file.
2) Now print the page you are inserting and save to your new PDF file.
3) PDF Creator will ask if you want to Add to Start or End. Select Add to End
4) Print pages 5 – 10 from your original PDF to your new PDF file. Select Add to End
You have now successfully inserted a page into your new PDF document.