I need to add a locator search feature to a web site. What I'm looking for is a "closest retail location" finder that the user enters their address, and then gets the five closest retail locations of a product. Here a few sample pages that have roughly the type of feature I'm looking for:

http://www.verabradley.com/Site/StoreLocator/StoreLocator.aspx
http://www.zocalousa.com/public/locator/
http://direct.where2getit.com/hoover/

I would also like to be advised on how to collect the information in a database. The locations for the products will need to be updated every 1 to 2 weeks.

I build sites with Dreamweaver and Flash but I'm not a programmer so I'm looking for a reliable source to perform programming tasks. Next job that I will be needing is to make a newsletter signup form that collects info in a database and also sends an e-mail to notify when people have signed up.