A PDF creator add-in

I'm looking for a product (add-in) that allows separation of a PDF into separate PDF documents by page ranges..

1-3 => 1.pdf, 

4=> 2.pdf,

5-9=>3.pdf,     etc.

Thanks for any feedback..

 

Not sure how automated it would be, but you should look at PDFsam (PDF Split and Merge) -- http://www.pdfsam.org/