Search Database and List Results

OK I have a search box on almost every page that I would like to search through the database and pull out a list of records that contain the search criteria.
So it would search all the titles, summary, keyword, and content areas and list out the entries that match the search.

<form class="search" id="search" method="post" action="search.php">
<input type="text" onFocus="if(this.value=='Looking for something...') this.value='';" onBlur="if(this.value=='') this.value='Looking for something...';" value="Looking for something..." size="30" class="inputbox" maxlength="60" name="title,summary,keywords,content,content_keyword" id="search_box">
</form>

Then on the results listing page
<div class="layout-cell content">
<div class="box post">
<?php foreach ($THESEARCHRESULTS as $record): ?>
<div class="componentheading"><a href="<?php echo $record['_link'] ?>"><?php echo $record['title'] ?></a></div>
<div class="box-body post-body">
<div class="post-inner article">

<article class="postcontent">
<!-- article-content -->
<?php if ($record['summary']): ?>
<?php echo $record['summary'] ?><br/>
<?php endif ?>
<?php ($record['content']): ?><!-- Would like to limit this output to a certain number of characters -->
<?php endforeach ?>
<div class="cleared"></div>

<!-- /article-content -->

</article>
<div class="cleared"></div>
</div>

<div class="cleared"></div>
</div>
</div>

<div class="cleared"></div>
</div>

Its ugly and does not work in its state now but that is what I'm shooting for.

Any help will be appreciated.

Michael