You can create a custom map and import pinpoints from an Excel or CSV file
with zip code information. Please test this by signup a trial a/c at:
http://www.imapbuilder.net/login/And you can refer the import function on the following page:
http://www.imapbuilder.com/gmap-builder ... import.phpand
http://www.imapbuilder.com/gmap-builder ... t_file.phpIf you have any problem with the import, you can email us a sample data
file for us to check for you, and we can also create a sample map for your
reference.