1) Unzip the content of this zip file under a subdirectory for example "/rsstocoopmirror/"
2) Upload the content of this folder "/rsstocoopmirror/" to your site with your ftp tool
3) Change the write permissions of the "/rsstocoopmirror/googlecoop/" subdirectory (chmod 777)
4) Test it at http://www.yoursite.com/rsstocoopmirror/index.php

The subdirectory "/rsstocoopmirror/googlecoop/" is designed to store the google co-op xml files. If you want to list the content of this subdirectory use the tool "list.php".

Pierre Rouarch