Add MailBeez Autoresponder to existing osCommerce site

I have an existing osCommerce website (version 2.2 RC2, on remote Linux server) that is fully functional, and now I need to add an auto-email system that will be integrated with the osCommerce database. MailBeez is an opensource module-based solution, and is supposed to be installable within 15 minutes ([login to view URL]) - but I keep breaking my site when I try to install it! I need someone to install the basic configuration, then to add some extra modules ('Contact customers w/o purchase', 'Win-back customer reactivation', and 'Birthday greetings'). Thanks for your bid!