Printing in Word 97

At work, I do a lot of mail merges for clients. The documents received from the client can be from 20 – 46 pages for 6000+ of their customers/employees. I send print jobs to our Canon iR110 in increments of 1000 or 2000 records depending on the size of the original document.
Is there a way (I am using Word 97 in Windows 2000) to put a separator page after each record so when the entire job goes to our bindery, they can separate the sets/records easily and quickly?