I HAVE AN OPPORTUNITY TO LAND A PRETTY GOOD CONTRACT WITH A SAT. INSTALLATION COMPANY, BUT THEY WANT ZIP CODES FOR EVERY TOWN THAT WE WILL COVER. WE NORMALLY GO BY COUNTIES OR RADIUS. I HAVE A PRETTY GOOD SIZE LIST OF COUNTIES. HOW WOULD I GO ABOUT FINDING OUT "EVERY" ZIP CODE IN "EVERY" COUNTY? (WITHOUT TAKING WEEKS) CAN ANYONE HELP ME. IF SO PLEASE REPLY, OR SEND PRIVATE MESSAGE. THANKS A BUNCH.