Autofill Search Engine from Separate Form, and Enter

[login to view URL] is a search engine for apartments. From a separate form on a different page, I would like a user to be able to input keywords, and have those words autofill the input box on MyNewPlace, and then process the keyword. Example: On my form, the person enters the zipcode "55119" and presses the Submit button. On MyNewPlace, results are shown for properties of the 55119 zipcode. You may write the code, and upon testing it, I will release the funds. I would like it done in a couple hours. If you can not do it, please do not bid.