Problem with Search function

Hi freinds,

I have created my own site in WordPress http://www.fiddeandersson.se/
I have done the code and design by myself but I have a problem now.
I want to create a search function but don’t have any experience about it.

This is what i done so far:

1) In sidebar.php i have add this code:

<div id="search">
<?php include (TEMPLATEPATH . '/searchform.php'); ?>
</div>

2) In searhform.php i have add this code:

<form role="search" method="get" id="searchform" action="<?php bloginfo('url'); ?>">
    <label class="search" for="s"></label>
    <input type="text" value="" name="s" id="s" />
    <input type="submit" id="searchsubmit" value="Search" />
</form>

3) In search.php i have add this code:

<?php get_header(); ?>

<div id="content">

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

<h2>Sökresultat</h2>

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

 <h2><a href="<?php the_permalink(); ?>" title="Permanent link to <?php the_title_attribute(); ?>">
		<?php the_title(); ?></a></h2>

 <p>Postat av: <?php the_author() ?> <?php the_time('Y-m-d')?> <?php the_time('H:i') ?> </p>

  <?php the_content() ?>

  <p><?php edit_post_link('Redigera','','<span class="tecken"> | </span>'); ?>  <?php comments_popup_link('0 kommentarer', '1 kommentar', '% kommentarer'); ?> <span class="tecken">|</span> <span class="pub">Kategoriserat under <?php the_category(', ') ?></p>

<?php endwhile; ?>
 <?php else : ?>

         <h2>Sidan du sökte kunde inte hittas.</h2>
<p>Tyvärr hittades den ej</p>

    <?php endif; ?>

</div>
<?php get_footer(); ?>

So my question is have do i create a search function from scratch? I have follow the WordPress guide about creating a search page but doesn’t solve my problem.

Do someone have a tutorial have to code a search.php with just some basics functions?

Best regards
Fidde