Sort posts alphabetically and exlude posts

Does anyone know how to list these posts alphabetically? I’ve tried a number of things and nothing seems to work?

I also need 2 posts excluding so if anyone knows how to do that also it would be great.

Code:

<?php query_posts( array('cat' => $category_id,'posts_per_page'=>'-1', 'orderby'=> 'title', 'order' => 'ASC')); ?>
		<ul id="ulposts2">
		<?php while ( have_posts() ) : the_post();
		    echo '<li';
		    if (($ID = get_the_ID()) == $pagepostid) echo ' class="proadv-current-item"';
		    //else echo ' class="post-id'.$ID.'-id'.$pagepostid.'"';
		    echo '>';
            echo '<div class="sponsor-thumb">';
            the_post_thumbnail( 'category-thumb' );
            echo '</div>';
		    echo '<a href="'.get_permalink().'">';
		    the_title();
		    echo '</a>';
		    echo '';
		endwhile; ?>

		<?php wp_reset_query(); ?>

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