Does this CGI script exist??

My mom is a realestate agent and I'm making a website for her, and I need a way to put up all her listings on one page without having to update it everytime she gets a new one...so realtor.com has a page that has all my mom's listings in it..but I dont want to just link to their website..i want to include it into my mom's (http://www.laura-scott.com)<--not even close to being done) website..so is their a cgi that will parse the page and take only the section that I want and then either write this to my mom's site or too a text file that I can do a include on?

Yes, CGI fiels will do the work.

has anyone made a script like this before?