WordPress.org

1. Upload wp-components.php to the /wp-content/plugins/ directory
2. Activate the plugin through the 'Plugins' menu in WordPress
3. Add components in the Settings->WP-Components admin panel
4. Syntax of template tag code to be placed within your theme: <?php get_component('component_slug'); ?>

Full and updated list of instructions are available at http://www.cagintranet.com/archive/wp-components-plugin/