How to override the “show at most”command?

I’m trying to find how to override the “show at most” command in the options/reading tab …

I’ve got a web site where the entries on the home page are limited to a fixed number (ie. 10), but I have a list of authors with their entries listed by titles and it’s defaulting to 10 as well (even though they have more than 10 entries).

How can I fix this? Thnx

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<span class="authorlist">

<li><a>" rel="bookmark" title="Permanent Link to <?php the_title(); ?>"><?php the_title(); ?></a></li>
</span>
<?php endwhile; endif; ?>