Printing PDF book to separate files

[kgrace4715 at aol.com]

I was wondering if anyone knows how to control the output file names of 
files that are printed when you select the option to print to "Separate 
Print job for Each Document".  I have a book with over 30 files ( more 
on the way) and by default I am prompted to save the file as 
XYZ.Book(Chapterfilename.pdf).  As you might imagine this can get to be 
tedious if this has to be performed each time I update the book.  I 
would ideally like to be able to have it print to the individual files 
without my interaction and automatically giving the output pdf file the 
name of the respective chapter file.  In this example the file would 
automatically name the file "chapterfilename.pdf".  Does anyone have 
any ideas on achieving this goal?