I work with PDFs a lot. I can’t tell you the last time I pulled a paper file to look at a document in it. Instead, I look only at my electronic copy of a file. Navigating in a PDF, however is not always the easiest thing to do, especially if the creator did not include bookmarks or other reference points.
An additional problem can arise when you are working with a document that has different styles of page numbers. An example is a brief, that may include pages i through x for the prefatory matters and Arabic numbers after that.
At her blog Going Paperless, Molly DiBianca, provides a useful, easy to follow, step-by-step tutorial on how to remumber your pages in a PDF.
The process she describes is easy to do and it is post I definitely recommend that you check out.