slider help

Hello,

I have a wordpress theme developed by a web designer to whom i do not have access anymore (I work for an environment NGO, the theme was made by a company as a donation, long story).

I want in the following code to make the slider/carousel to pick up posts which I add into a particular category (let’s say ‘slider’), not the sticky posts.

<div class="featured_list">
<ul id="carousel">
	<?php
	$args = array(
		'posts_per_page' => 5,
		'cat' => 1,
		'post__in'  => get_option( 'sticky_posts' ),
		'ignore_sticky_posts' => 1
	);
	query_posts( $args );	

	while ( have_posts() ) : the_post(); ?>
	<li>
		<?php the_post_thumbnail( 'featured-post' ); ?>
		        			<h3><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h3>
		        			<p><?php  $excerpt_feat = get_the_excerpt();
     	echo shiftms_string_limit_words($excerpt_feat, 20);?></p>
	</li>
	<?php
	endwhile;
	wp_reset_query(); ?>
</ul>
<div class="clear"></div>
<div id="pager" class="pager"></div>
</div><!-- .featured_list -->

The website is intranzitie.org

Any ideas?
Thanks/