Issues w/ Shortcode that displays Loop

CMS & WordPress
1

I have the following shortcode added to my functions.php. Source: http://www.wprecipes.com/wordpress-shortcode-display-the-loop

function myLoop($atts, $content = null) {
	extract(shortcode_atts(array(
		"pagination" => 'true',
		"query" => '',
		"category" => ''
	), $atts));
	global $wp_query,$paged,$post;
	$temp = $wp_query;
	$wp_query= null;
	$wp_query = new WP_Query();
	if($pagination == 'true'){
		$query .= '&paged='.$paged;
	}
	if(!empty($category)){
		$query .= '&category_name='.$category;
	}
	if(!empty($query)){
		$query .= $query;
	}
	$wp_query->query($query);
	ob_start();
	?>
	        <?php
        	if ( get_query_var( 'paged') ) { $paged = get_query_var( 'paged' ); } elseif ( get_query_var( 'page') ) { $paged = get_query_var( 'page' ); } else { $paged = 1; }
        	
        	$query_args = apply_filters( 'woo_blog_template_query_args', $query_args ); // Do not remove. Used to exclude categories from displaying here.
        		
        	
        	if ( have_posts() ) {
        		$count = 0;
        		while ( have_posts() ) { the_post(); $count++;
        ?>                                                            
            <!-- Post Starts -->
            <div <?php post_class('drop-shadow lifted'); ?>>
               
                <h2 class="title"><a href="<?php the_permalink(); ?>" rel="bookmark" title="<?php the_title_attribute(); ?>"><?php the_title(); ?></a></h2>
                
                <?php woo_post_meta(); ?>

                <div class="entry">

<?php if ( $woo_options['woo_post_content'] != 'content' ) { woo_image( 'width=' . $woo_options['woo_thumb_w'] . '&height='.$woo_options['woo_thumb_h'] . '&class=thumbnail ' . $woo_options['woo_thumb_align'] ); } ?> 

					<?php global $more; $more = 0; ?>	                                        
                    <?php if ( $woo_options['woo_post_content'] == 'content' ) { the_content(__( 'Read More...', 'woothemes' ) ); } else { the_excerpt(); } ?>
                </div>
    			<div class="fix"></div>
    			
                <div class="post-more">      
					<span class="comments"><?php comments_popup_link( __( 'Leave a comment', 'woothemes' ), __( '1 Comment', 'woothemes' ), __( '% Comments', 'woothemes' ) ); ?></span>
                	<?php if ( $woo_options['woo_post_content'] == 'excerpt' ) { ?>
					<span class="post-more-sep">&bull;</span>
                    <span class="read-more"><a href="<?php the_permalink(); ?>" title="<?php esc_attr_e( 'Continue Reading &rarr;', 'woothemes' ); ?>"><?php _e( 'Continue Reading &rarr;', 'woothemes' ); ?></a></span>
                    <?php } ?>
                </div>   
    
            </div><!-- /.post -->
                                                
        <?php
        		} // End WHILE Loop
        	
        	} else {
        ?>
            <div <?php post_class(); ?>>
                <p><?php _e( 'Sorry, no posts matched your criteria.', 'woothemes' ); ?></p>
            </div><!-- /.post -->
        <?php } // End IF Statement ?>  
	<?php if($pagination == 'true'){ ?>
 <?php woo_pagenav(); ?>
	<?php } ?>
	<?php $wp_query = null; $wp_query = $temp;
	$content = ob_get_contents();
	ob_end_clean();
	return $content;
}

add_shortcode("loop", "myLoop");

See my working example here: http://174.122.31.60/test/things-to-do/attractions-shopping-etc/. Can someone tell me how to add additional attributes such as “order”, “posts_per_page”, etc.?

Many Thanks,

Travis