Product feed

Hi, ive just found out my supplier has a live RSS/xml feed available so that you can have a live product stock feed that they update daily. apparantly this can be implemented into your own website so that you also show a live stock feed of every item. I saw this posted somewhere else and they had know answer. Does anybody know how to make this work? Is there a mod out there that helps with this? This is some info I get from my supplier
Product Download Help File

The purpose of https://shop.com/feeds/productdownload.php is to help you quickly update your database with fresh data from the blank back-end server. Below is a list of required fields and a description of each one.Required Variables- id

• fields
• delim
• One of the following: time, sku, mfgn, ohtime
  Optional Variables- invtype
  id - A unique string that tied to your account. Your id is: MPB_MzU0NzQ3M?????????
  fields - Fields you want returned followed delimited by a comma