Hello. I've purchased Google Maps 2 and was wondering the best way of performing a nearby search using a query string or similar?

I have all my addresses in a database (I'm using Access with ASP) and I would like people to type in their postcode which would then bring back a map of their closest store location. Similar to this one:
www.silverdalebathrooms.co.uk/find-a-uk-retailer/
So, if they were to type in 'WF1 2HZ', they would see a Google map of close-by locations and also return a list of the company names. Is this possible using DMXZone's extension, and if not, could you possibly point me in the right direction of how I can create such a page?

thank you!