It doesn't get any easier than this. Zoom's system takes care of all the work for you -- no keywords to enter, no scripts to install -- just plain, simple setup-and-go. I've been running and installing scripts for years, and this one's by far been the easiest to drop into a site. It has a ton of customization tools, and you can make the engine look graphically any way you want for seamless integration into your site. Can't say enough good things about this script -- a superior product all the way around!