Tutorial to make custom google maps form/find location by zip code?

I need to create a form where there will be input box and below google map. User will be required to type his/her post code then when click btn pin will drop on correct location. Does anyone could point me at right direction where i can f开发者_运维问答ind such a example or tutorial how that could be done.

You'll want to use the google maps API, specifically the geocoder, to map a location to a point on the map, a code example is here: http://gmaps-samples.googlecode.com/svn/trunk/geocoder/v2-geocoder-tool.html