Show Pages featured image rather than posts

Hey..Really Sorry, for this.
I asked everyone, but no one has answered it.

I have this theme set up that takes images from posts that has featured image and displays on home page slider. Instead of that I wanted to have 3 custom images that i want to display ( or if not possible images from pages and not posts )

Here is the code that i think is responsible for it.

<?php get_header(); wp_enqueue_script( 'slider-main', get_template_directory_uri() . '/js/slider.js' ); ?>
      <div id="slider">
         	<div id="slideshow"><ul class="bjqs">
			<?php $sbargs = smallbusiness_ppp(); query_posts( $sbargs );
			if (have_posts()) : while (have_posts()) : the_post();?>
            <li><a href="<?php the_permalink(); ?>"><?php the_post_thumbnail('slide-thumb'); ?><div class="post-slide"><h2><?php the_title(); ?></h2><?php  $sbExcerptLength=30; the_excerpt(); ?></div></a></li>
			<?php endwhile; endif; ?>
            </ul></div>
      	</div>

Please tell me what changes in code should I make to accomplish this. I would be really thankful to you. No one has helped me in this regard. I hope you can cause you have made so many slideshow plugins. Please..please..please..

http://wordpress.org/extend/plugins/featured-posts-slideshow/