fatal error in index.php

I am getting the following error message:

Fatal error: Call to undefined function get_header() in /home/phbrowne/public_html/phbrowne.com/index.php on line 1

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Here is my setup:

WordPress files are located in:
/public_html/phbrowne.com/wp-content/themes/THEMEFOLDERS/FilesThatCameWithThemes

phbrowne.com is an additional domain which is hosted by webhostingpad.com. The WordPress install was done via Fantastico Deluxe.

I assume that this is a question of pointing things in the right direction, but I am new to WordPress.

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Here is the index.php file

<?php get_header(); ?>
<div id=”page”><div id=”content”><?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>
<div class=”post” id=”post-<?php the_ID(); ?>”>
<div class=”post-date”><span class=”post-month”><?php the_time(‘M’) ?></span> <span class=”post-day”><?php the_time(‘d’) ?></span></div><h2>” rel=”bookmark” title=”Permanent Link to <?php the_title(); ?>”><?php the_title(); ?></h2>
<span class=”post-cat”>Topic: <?php the_category(‘, ‘) ?>| <?php edit_post_link(‘Edit’,”,’|‘); ?></span> <span class=”post-comments”><?php comments_popup_link(‘No Comments »’, ‘1 Comment »’, ‘% Comments »’); ?></span>
<div class=”entry”><?php the_content(‘Read the rest of this entry »’); ?></div></div>

<?php endwhile; ?>
<div class=”navigation”><span class=”previous-entries”><?php next_posts_link(‘Previous Entries’) ?></span> <span class=”next-entries”><?php previous_posts_link(‘Next Entries’) ?></span></div>
<?php else : ?><h2 class=”center”>Not Found</h2>
<p class=”center”>Sorry, but you are looking for something that isn’t here.</p>
<?php endif; ?></div>
<?php include(TEMPLATEPATH.”/right_sidebar.php”);?>
<?php get_sidebar(); ?>
</div>
<?php get_footer(); ?>

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The index.php file (that I assume is being called) is located here:

/public_html/phbrowne.com/index.php

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What I am guessing is happening is that the index.php file located in the phbrowne.com directory is the one being called. Since the file I *really* want to be called is actually located here:

/public_html/phbrowne.com/wp-content/themes/THEMEFOLDERS/index.php

the correct file is never being navigated to.

Now…how do I fix this?

Thanks in advance for any assistance you can give!