Infinite-Scroll selectors?

hello. i’m very sorry for write this. i read all the support and did not find the answer 🙁
which selectors i must write?

thank you!

index `<?php get_header(); ?>
<div id=”page”>
<div id=”content”>

<?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>

<div id=”post2″>

<div class=”post” id=”post-<?php the_ID(); ?>”>
<a href=”<?php the_permalink() ?>” rel=”bookmark” <?php the_title_attribute(); ?>”><?php the_title(); ?></a>

</div>

<div class=”entry”>

<?php the_content(‘<span>’.__(”).'</span>’); ?>

</div>

</div>
</div>

<?php endwhile; ?>
<div class=”navigation”>
<div class=”alignleft”><?php next_posts_link(‘« ‘) ?></div>
<div class=”alignright”><?php previous_posts_link(‘»’) ?></div>
</div>
<?php else : ?>
<?php endif; ?>

</div>

</div>

<?php get_footer(); ?>
`

http://wordpress.org/extend/plugins/infinite-scroll/