How to exclude or not to show Last Post in Category with (query_posts) on Index

People here and leave my question is: How to exclude or not to display the Last Post published in a category with (query_posts)? and to use the same code and bug duplicated 2s times, now I want you to show me the last post published and the other post-last show that none of the 2s show the same post. I used the post randon variant but always in some cases, I will display the same post and that’s what I do not. Of course, below I show you the code to bug I mean, these are the Arthemia Theme:

<div id="headline" class="left">
		<?php query_posts("showposts=1&category_name=Especiales"); ?>
		<?php while (have_posts()) : the_post(); ?>	

	<h3 class="cat_title"> <?php the_category(', '); ?> &raquo;</h3>
	<div class="title"><a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a></div>
	<div class="meta"><?php the_time('j M Y') ?> | <?php comments_popup_link('<div class="genericon genericon-chat"></div> +', '<div class="genericon genericon-chat"></div> 1', '<div class="genericon genericon-chat"></div> %');?></div>
	<?php $values = get_post_custom_values("Image");?>
 	<a class="left" href="<?php the_permalink() ?>" rel="bookmark" title="Enlace a <?php the_title(); ?>">
<img src="<?php echo bloginfo('template_url'); ?>/scripts/timthumb.php?src=/<?php
$values = get_post_custom_values("Image"); echo $values[0]; ?>&w=250&h=200&zc=1&q=100"
alt="<?php the_title(); ?>" class="left" width="250px" height="200px"  /></a>
	<?php the_excerpt(); ?>
	<a class="left" href="<?php the_permalink() ?>" rel="bookmark" title="Enlace a <?php the_title(); ?>">Leer m&aacute;s &raquo;</a>
	<?php endwhile; ?>
		</div>

		<div id="headline" class="right">
		<?php query_posts("showposts=1&excludeposts=1&orderby=rand&category_name=Especiales"); ?>
		<?php while (have_posts()) : the_post(); ?>	

	<h3 class="cat_title"> <?php the_category(', '); ?> &raquo;</h3>
	<div class="title"><a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a></div>
	<div class="meta"><?php the_time('j M Y') ?> | <?php comments_popup_link('<div class="genericon genericon-chat"></div> +', '<div class="genericon genericon-chat"></div> 1', '<div class="genericon genericon-chat"></div> %');?></div>
	<?php $values = get_post_custom_values("Image");?>
 	<a class="left" href="<?php the_permalink() ?>" rel="bookmark" title="Enlace a <?php the_title(); ?>">
<img src="<?php echo bloginfo('template_url'); ?>/scripts/timthumb.php?src=/<?php
$values = get_post_custom_values("Image"); echo $values[0]; ?>&w=250&h=200&zc=1&q=100"
alt="<?php the_title(); ?>" class="left" width="250px" height="200px"  /></a>
	<?php the_excerpt(); ?>
	<a class="left" href="<?php the_permalink() ?>" rel="bookmark" title="Enlace a <?php the_title(); ?>">Leer m&aacute;s &raquo;</a>
	<?php endwhile; ?>
		</div>