page numbering based on sections - is this possible

Hello,

Does anybody know of a way to change the way page numbering is formatted?

We would like to produce a document that, instead of using sequential 
page numbering (1,2,3,4,.....), numbers the pages based on the sections.
(I.e., for the 6th page of Section 3, we would like the page number to 
be '6-3').

We have a very large document that we like to maintain hard copies of, 
but the document changes frequently, and it is not practical to reprint 
the entire document every time it changes, so we would like to print 
changed sections only, and not have the entire page numbers be messed up 
throughout the rest of the document.

Thanks for any info.

-Duane