Edit: Make a back-up copy first!!
(of the one file you're changing)
````````````
find your theme folder and locate index.php
````````
This is called the Wordpress loop:
<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
<div class="post">
<h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
<small><?php the_time('F jS, Y'); ?></small>
<div class="entry">
<?php the_content(); ?>
</div>
</div> <!-- closes the first div box -->
<?php endwhile; else: ?>
<p>Sorry, no posts matched your criteria.</p>
<?php endif; ?>
```````````
* The code I posted is the minimum which is actually needed.
* 'Everything else' will include most of what you are trying to get rid of.
````
ps. I think I got it right, but if you need more info:
The Loop