<?php
		$query = new WP_Query( 'page_id=123' );
		echo '<h1 class="siteheading"> <a href="<?php the_permalink(); ?>"> <?php the_title(); ?></a></h1>';

		$headline = get_post_meta($post->ID, "_headline", true);
			if($headline != "") $headline = '<h2>'.$headline.'</h2>';
			echo '<div class="center">';
					if($headline != "") echo '$headline';
			echo '</div>';

		echo '<?php the_content();?>';
	?>