Lead and Previous Posts

I want to display 2 lead posts with a fully summary from a specific category with 4 of the most recent previous posts to be displayed below showing only titles.

This can be done. I used to have the code.

It is now being done on https://blog.gluedideas.com/

I have tried and tried to get the code working but I can’t. I need the code to display 2 or whatever other number of lead posts and differentiate them from previous posts.

What code should I use in my loop?

I have managed to take some code from Glued Ideas Subtle theme, but I am pretty sure it needs the subtly theme to work:

<!-- open loop_articles --><div id="loop_articles">
<?php
query_posts('category_name=events');
if (have_posts()) :
$iLeadIndex = 0;
while (have_posts()) : the_post();
$iLeadIndex++;
$sPostClass = '';
$bShowContent = true;
if ($iLeadIndex <= $aOptions['lead_count']) {
$sPostClass .= ' lead';
$bShowContent = true;
} else {
$sPostClass .= ' summary';
$bShowContent = false;
}
if ($iLeadIndex == $aOptions['lead_count'] + 1) {
echo ('<h2>Previous Articles</h2>');
}
?>

<!-- open post --><div>

<h3>
<a href="<?php the_permalink() ?>">
<?php the_title(); ?>
</a>
</h3>

<?php if ($bShowContent) : ?>

<!-- open content --><div class="content">
<?php the_content(''); ?>

<!-- close content --></div>

<?php endif; ?>

<!-- close post --></div>

<?php endwhile; else: ?>

<h2>Oops - There's Nothing Here</h2>
<p>It looks like the blog owner hasn't written anything yet!</p>

<?php endif; ?>

<!-- close loop_articles --></div>