Topic drift: the zip code .dmp file that the ecommerce module expected was purchased data that aD could not redistribute. However if you need zip code data, Jon Griffin's ACS Reference module contains zip code data from the latest census. You can get this at cvs.arsdigita.com in the packages cvs tree. I think the file contains the data in insert format; not sure if there are any edits that need to be made to use the file to insert into a postgres db but sure someone will post to this list if they have occaision to grab it and do the conversions.
