MLS listings

While not specifically a WordPress question, i’ve been trying to figure out how to set up MLS listings on my wordpress sites (for real estate agents) and i just can’t find anything on how to do it. I’m working with listings provided by homefinder.net/HERO PM (homefinder.net provides the listings i believe while HERO PM manages them. While what HEROPM provides (a slightly editable page to display listings and iframe in) works, i need to shape the listings to display the way i want them, and i really need some help or at least somewhere to start on these. Can anyone help?