PHP Code Help

https://www.ads-software.com/extend/plugins/sexy-comments/installation/

Hi I very new to this and really want to install sexy comments plugin. But Im having trouble installing it, it says i need to

Locate your theme’s template file that displays comments (typically comments.php). Remove the comment output loop and replace with:

<?php sexycomments::show($comments); ?>

Here is my comments.php page and I have no clue as to where to replace the code?

<?php // Do not delete these lines
	if ('comments.php' == basename($_SERVER['SCRIPT_FILENAME']))
		die ('Please do not load this page directly. Thanks!');
        if (!empty($post->post_password)) { // if there's a password
            if ($_COOKIE['wp-postpass_' . COOKIEHASH] != $post->post_password) {  // and it doesn't match the cookie
				?>

<p class="nocomments">
  <?php _e("This post is password protected. Enter the password to view comments."); ?>

  <?php
				return;
            }
        }
		/* This variable is for alternating comment background */
		$oddcomment = 'alt';
?>
<div id="cblock">
  <!--comments area-->
  <?php if ($comments) : ?>
  <h2 id="comments">
    <?php comments_number(__('No Comment'), __('1 Comment so far'), __('% Comments so far')); ?>
  </h2>
  <ol id="commentlist">
    <?php foreach ($comments as $comment) : ?>
    <li class="<?php echo $oddcomment; ?>" id="comment-<?php comment_ID() ?>">
      <div class="commentname">
        <?php comment_author_link()?>&nbsp;<?php comment_date('F jS, Y') ?>
        <?php comment_time()?>
		<?php edit_comment_link(__("Edit This"), ''); ?> 

        </div>
      <?php if ($comment->comment_approved == '0') : ?>
      <em>Your comment is awaiting moderation.</em>
      <?php endif; ?>
      <?php
					if(the_author('', false) == get_comment_author())
						echo "<div class='commenttext-admin'>";
					else
						echo "<div class='commenttext'>";
					comment_text();
					echo "</div>";

					?>
    </li>
    <?php /* Changes every other comment to a different class */
					if ('alt' == $oddcomment){
						$oddcomment = 'standard';
					}
					else {
						$oddcomment = 'alt';
					}
				?>
    <?php endforeach; /* end for each comment */ ?>
  </ol>
  <?php else : // this is displayed if there are no comments so far ?>
  <?php if ('open' == $post-> comment_status) : ?>
  <!-- If comments are open, but there are no comments. -->
  <h2 id="comments">No Comments </h2>
  <?php else : // comments are closed ?>
  <!-- If comments are closed. -->
  <p class="nocomments">Comments are closed.

  <?php endif; ?>
  <?php endif; ?>
  <?php if ('open' == $post-> comment_status) : ?>
  <!--comments form -->
  <h2>Leave a comment </h2>
  <?php if ( get_option('comment_registration') && !$user_ID ) : ?>
   You must be <a href="<?php echo get_option('siteurl'); ?>/wp-login.php?redirect_to=<?php the_permalink(); ?>">logged in</a> to post a comment. 

  <?php else : ?>
  <div id="commentsform">
    <form action="<?php echo get_option('siteurl'); ?>/wp-comments-post.php" method="post" id="commentform">
      <?php if ( $user_ID ) : ?>
       Logged in as <a href="<?php echo get_option('siteurl'); ?>/wp-admin/profile.php"><?php echo $user_identity; ?></a>. <a href="<?php echo get_option('siteurl'); ?>/wp-login.php?action=logout" title="<?php _e('Log out of this account') ?>"> Logout &raquo; </a> 

      <?php else : ?>

        <input type="text" name="author" id="author" value="<?php echo $comment_author; ?>" size="22" tabindex="1" />
        <label for="author"><small>
        <?php _e('name');?>
        <?php if ($req) _e('(required)'); ?>
        </small></label>

        <input type="text" name="email" id="email" value="<?php echo $comment_author_email; ?>" size="22" tabindex="2" />
        <label for="email"><small>
        <?php _e('email');?>
        (
        <?php _e('non sar&agrave; visibile');?>
        )
        <?php if ($req) _e('(required)'); ?>
        </small></label>

        <input type="text" name="url" id="url" value="<?php echo $comment_author_url; ?>" size="22" tabindex="3" />
        <label for="url"><small>
        <?php _e('sito web');?>
        </small></label>

      <?php endif; ?>
      <!--<small><strong>XHTML:</strong> You can use these tags: <?php echo allowed_tags(); ?></small>
-->

        <textarea name="comment" id="comment" cols="50" rows="10" tabindex="4"></textarea>

        <input name="submit" type="submit" id="submit" tabindex="5" value="Send" />
        <input type="hidden" name="comment_post_ID" value="<?php echo $id; ?>" />

      <?php do_action('comment_form', $post->ID); ?>
    </form>
  </div>
  <?php endif; // If registration required and not logged in ?>
  <?php endif; // if you delete this the sky will fall on your head ?>
</div>