If your using Wordpress and want to display the posts on the homepage of your own site, you don't even need to muck around in RSS. Wack this code in the head section of the code:
<?php
// Include Wordpress
define('WP_USE_THEMES', false);
require('./blog/wp-blog-header.php');
query_posts('showposts=2');
?>
And stick this in HTML where you want the posts to show:
<?php while (have_posts()): the_post(); ?>
<?php the_title(); ?>
<?php the_excerpt(); ?>
<a href="<?php the_permalink(); ?>">Read more...</a>
<?php endwhile; ?>
The page will have to be saved as a .php page, but works great. See my site for an example.