Populate Zip Code Information to SharePoint Form

I am using a SharePoint / Infopath form to collect information from employees about our customers.
The form was designed using the InfoPath designer and published to my sharepoint site.

I would like to have the City and State fields populate information based on Zip Code field.

I am guessing I will need to have some VB.NET or ASP.NET code do a zipcode lookup and then populate the information back to the 2 resepective fields.
Moreover, have the zipcode field execute a query to a zipcode look up service using a get method and then post back the results to city and state fields respectively.
Any thoughts on how to get started?
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1. You need to have textbox for Zip Code.

2. Create a following 2 rule on Zip Code Text box
to populate state based on zip code

to populate city based on zip code

3. Following article will help to Lookup city and state based on zipcode using code or webservice.

Hope this helps. Happy Programming!!!

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glowshiftAuthor Commented:
Nilang ETI,

Thanks for the straight forward advice and resolutions.
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