How to link non_WP ‘search’ function to WP search function?

Okay, couldn’t figure out including WP 2.3 functions in my non-WP index this weekend (help?) I’m currently working on trying to link my non-WP ‘search’ function to my WP ‘search’ function.
Example non-WP ‘search function:
<div id=”rightbar” class=”sidebar”>

• <form id=”searchform” method=”get” action=”https://www.goodlookingbrother.com/search”&gt;
  <div>

  <input type=”text” name=”s” id=”s” size=”15″ value=”” />

  <input type=”submit” value=”Search” />
  </div>
  </form>

/////WP’s ‘search.php’:

<?php get_header(); ?>

<div id=”content”>

<div class=”post”>
<h1 class=”title”>Search Results</h1>
<div class=”entry”>

<?php if (have_posts()) : ?>

<ul class=”posts”>
<?php while (have_posts()) : the_post(); ?>

• <h2 class=”title”>
  ” rel=”bookmark” title=”Permanent Link to <?php the_title(); ?>”>
  <?php the_title(); ?>
  
  </h2>
  <p class=”byline”><small><?php the_time(‘l, F jS, Y’) ?></small></p>
  <?php the_excerpt(); ?>

<?php endwhile; ?>

<?php else : ?>

<p>No posts found. Please try a different search.</p>

<?php endif; ?>
</div>
<div class=”links”> </div>
</div>

<div class=”navigation”>
<div class=”alignleft”><?php next_posts_link(‘« Previous Entries’) ?></div>
<div class=”alignright”><?php previous_posts_link(‘Next Entries »’) ?></div>
</div>

</div>

<?php get_footer(); ?>