Has anyone used a zip code locator script? There are several to choose from, most cost around 200-300 bucks. I found one that 's free here http://www.micahcarrick.com/04-19-2005/php-zip-code-range-and-distance-calculation.html and this free one apparently one an award from planet source code (whatever that is)...jut wondering if anyone has had any experience or warnings about different scripts.