I can’t change my comments settings

Hi,
I would like to change my comments settings so that it shows the newer comments first, there will be a page break after every 10 comments and everyone can write a comment without moderation of me (admin). I know that you can easily change all this under ‘settings’ and I did change it, but for some reason it has no effect. Anyone an idea what that could be? Here is my code in case that there is something wrong with it:

<?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">This post is password protected. Enter the password to view comments.</p>

			<?php
			return;
		}
	}

	/* This variable is for alternating comment background */
	$oddcomment = 'class="alt" ';
?>

<!-- You can start editing here. -->

<?php if ($comments) : ?>
	<div id="comment-list"><?php comments_number('No smoshs!', 'One smosh!', '% smoshs!' );?></div>

	<?php foreach ($comments as $comment) : ?>
		<div class="comment-left" <?php echo $oddcomment; ?>id="comment-<?php comment_ID() ?>">
			<div class="comment-meta">
            <a href="http://en.gravatar.com/"><img src="<?php gravatar("R", 40); ?>" alt="Avatar" class="avatar" /></a><br />
            <cite><?php comment_author_link() ?></cite>
			<?php if ($comment->comment_approved == '0') : ?>
			<em>Your comment is awaiting moderation.</em>
			<?php endif; ?>
			<br />
			<span class="comment-metadata">wrote on <?php comment_date('F jS, Y') ?> <?php edit_comment_link('edit','&nbsp;&nbsp;',''); ?></span>
            </div>
            <div class="comment-txt"><?php comment_text() ?></div>
            <br clear="all" />
		</div>

	<?php
		/* Changes every other comment to a different class */
		$oddcomment = ( empty( $oddcomment ) ) ? 'class="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. -->

	 <?php else : // comments are closed ?>
		<!-- If comments are closed. -->
		<p class="nocomments">Comments are closed.</p>

	<?php endif; ?>
<?php endif; ?>

<?php if ('open' == $post->comment_status) : ?>

<?php if ( get_option('comment_registration') && !$user_ID ) : ?>
<p>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.</p>
<?php else : ?>

<form action="<?php echo get_option('siteurl'); ?>/wp-comments-post.php" method="post" id="commentform">

<?php if ( $user_ID ) : ?>

<p>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="Log out of this account">Logout &raquo;</a></p>

<?php else : ?>
<div class="comments-PII">
<p style="font-size:14px; color:#f4f5f5; font-family: Tahoma, Geneva, sans-serif, Arial, Helvetica, sans-serif;"><label for="author">Name:</label><br />
<input type="text" name="author" id="author" value="<?php echo $comment_author; ?>" tabindex="1" /><br />
<span class="note"><?php if ($req) echo "required"; ?></span><br />

<label for="email">Email Address:</label><br />
<input type="text" name="email" id="email" value="<?php echo $comment_author_email; ?>" tabindex="2" /><br />
<span class="note"><?php if ($req) echo "required -"; ?> won't be displayed</span><br />

<label for="url">Website URL:</label><br />
<input type="text" name="url" id="url" value="<?php echo $comment_author_url; ?>" tabindex="3" /></p>
</div>
<?php endif; ?>

<!--<p><small><strong>XHTML:</strong> You can use these tags: <code><?php echo allowed_tags(); ?></code></small></p>-->
<div class="comments-PII-2">
<p style="font-size:18px; color:#f4f5f5; font-family: Tahoma, Geneva, sans-serif, Arial, Helvetica, sans-serif;">What do you think?</p>
<p><textarea name="comment" id="comment" tabindex="4"></textarea></p>

<p><input name="submit" type="submit" id="submit" tabindex="5" value="Smosh it!" />
<input type="hidden" name="comment_post_ID" value="<?php echo $id; ?>" />
</p>
</div>
<?php do_action('comment_form', $post->ID); ?>

</form>

<?php endif; // If registration required and not logged in ?>

<?php endif; // if you delete this the sky will fall on your head ?>