Changing default margins

I am trying to create a pdf of a file that is a book with different margins on odd and even pages - i.e. mirrored margins.  How does this work.  I've changed the margins to a new format on the printer server but I don't see how to make mirror margins - i.e. 1/4 inch on outside edges and 1 inch on inside edges for binding.



this is only doable from the printing application, PDFCreator can´t do it.