Wordpress theme to be integrated with Zillow\'s API connection with MLS/IDX

I will need someone to be able to integrate my current Real Estate theme on Wordpress with Zillow's API connection so when people are searching the database it will also pull the information from the MLS/IDX server. Currently the theme has it's on property database which you can enter in the property information and it will pull it and display it on the site. I want the the theme's search database to use the API to pull the information and display it in the same format as the current theme. Here is the link to current theme: [login to view URL] Here is the information for the Zillow API: [login to view URL]