adding a right sidebar or column to single page

hi everyone,

i’d like to modify my theme so there is a column or sidebar on the right side of the single post pages.

The current single page looks like this:

http://www.gardenfork.tv/?p=1048

here is the code for a single post

<?php get_header(); ?>

        	<div id="content">

		<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

			<?php if ( get_option( 'woo_breadcrumbs' ) == 'true') { yoast_breadcrumb('<p id="breadcrumbs">','</p>'); } ?>

            <div class="post" id="post-<?php the_ID(); ?>">
                <h1><?php the_title(); ?></h1>
                <p class="meta">Posted on <?php the_time('F jS, Y') ?> by <?php the_author() ?> in <?php the_category(', ') ?></p>

                <div class="entry">
					<?php if (get_option('woo_image_single') == 'true' ) woo_get_image('image',get_option('woo_single_width'),get_option('woo_single_height'),'thumbnail alignleft'); ?>
                    <?php the_content('<p class="serif">Read the rest of this entry &raquo;</p>'); ?>
                    <?php wp_link_pages(array('before' => '<p><strong>Pages:</strong> ', 'after' => '</p>', 'next_or_number' => 'number')); ?>

                    <!--
                    <?php trackback_rdf(); ?>
                    -->

                    <?php edit_post_link('Edit this entry','','.'); ?>

                </div>
                <div class="fix"></div>

            </div>

        <!-- MPU 300x300 ad -->
        <?php if (get_option('woo_ad_content') == 'true') { if (get_option('woo_ad_content_adsense') <> "") echo stripslashes(get_option('woo_ad_content_adsense')); else { ?>
            <div id="advert_content">
                <a href="<?php echo get_option('woo_ad_content_url'); ?>"><img src="<?php echo get_option('woo_ad_content_image'); ?>" width="468" height="60" alt="advert" /></a>
            </div>
        <?php } }?>	                

        <?php comments_template(); ?>

        <?php endwhile; else: ?>

                <p>Sorry, no posts matched your criteria.</p>

        <?php endif; ?>

            </div><!--content-->		

<?php get_sidebar(); ?>
<?php get_footer(); ?>