There is a service from Mailer's Software (http://www.mailerssoftware.com/Products/zs.html) that should get you going in the right direction. Pretty slick, and you can subscribe to it, meaning you'll get updates as new zip codes come out-- sgd > -----Original Message----- > From: Joshua Olson [mailto:joshua at alphashop.net] > > > : I have been tasked with coming up with posible solutions > for building a > : dealer locator that is to be searched by postal code.