Google Maps - Geocoder & Zip/Postcode Search

I want someone who understands the Google Maps/Geocoder (Javascript version) to add a Zip/Postcode check to my site, with the following functionality - 1) checks that the zip/postcode supplied by visitors are genuine during Registration. 2) calculates the distance between selected zip/postcodes during Search & when displaying user's profile. 3) preferably, displays a small Google map on user's profiles (based on their zip/postcode) - this is NOT vital but would be nice. I recall that one version of the API places a small limit such as 250 calls per day on the Geocoder - that is not sufficient - I want the other API - I think the other API is still free but registration is required. I do not have time to check what I'm writing right now but if you know Google Maps API, then you'll understand what I mean. I'll provide existing page code & copy of database for easy integration. If you prefer, you can have ftp access. Only bid if you know how to do the project. This is a small project, and I will pay a fair price for it - bid what you need to earn from this project and perhaps you will win it.