How to Insert a blank page, so that 'Important Information' always starts on a new sheet

Hi,

My data file is a letter/statement combination in PDF format. I have 1 PDF file per letter/statement combination, so that each pdf generally runs as follows:

Letter page front and back

Statement page(s) 1 to x

Important Information page 1 to x

Because of the job specification, I need make sure that the ‘Important information’ part of the statement always starts on the front of a new sheet. Which means that for some I need to insert a blank image into the original pdf so that the pdf runs as follows :

Letter page front and back

Statement page(s) 1 to x

Inserted blank page, if current page count is odd

Added back ‘Important Information’ page(s) 1 to x

Hope you can help.

If Duplex your new Page should always start on the Front of a Sheet