1. Upload the folder WPRP to the /wp-content/plugins/ directory, or you can Login the Dashboard, upload the plugin, first download it.
2. Activate the plugin through the ‘Plugins’ menu in WordPress
3. Place <?php wp_related_posts(); ?> in anywhere of your templates, I use WordPress 2.9.2, and I modify the single.php of WordPress default theme kubrick:
<?php the_content(‘<p class="serif">Read the rest of this entry »</p>’); ?>
<?php wp_related_posts(); ?>
4. Dashboard >Settings >Ralated Posts, configure basic settings of WordPress Related Posts.