Add search criteria on a site.

I have a resale car portal for used cars. On home page i have search by options. I want to add search by zip code on the home page. Presently we don't save zip codes in db but we do use them in profiling. So it's king of a dummy useless entry for user. What you need to do is: 1. Save zip in db. 2. Provide search box on home page to search by zip code. (postal code) Only Indians can apply for this project and the proposal should start with "i am the php king" Other entries will be ignored. This is a fixed budget project and my estimation is that this is 1 hour's job and i can pay around 500 INR on completion of the project. Anyone willing to do it can message me and i can provide cpanel and details to start the work. Thanks.