Adding pagination links

Hi – I’m trying to insert this pagination code from the blog…

<!--BEGIN .navigation .page-navigation -->
			<div class="navigation page-navigation">
				<?php if(function_exists('wp_pagenavi')) { wp_pagenavi(); } else { ?>
				<div class="nav-next"><?php next_posts_link(__('&larr; Older Entries', 'framework')) ?></div>
				<div class="nav-previous"><?php previous_posts_link(__('Newer Entries &rarr;', 'framework')) ?></div>
				<?php } ?>
			<!--END .navigation .page-navigation -->
			</div>

			<?php else : ?>

				<!--BEGIN #post-0-->
				<div id="post-0" <?php post_class(); ?>>

					<h2 class="entry-title"><?php _e('Error 404 - Not Found', 'framework') ?></h2>

					<!--BEGIN .entry-content-->
					<div class="entry-content">
						<p><?php _e("Sorry, but you are looking for something that isn't here.", "framework") ?></p>
					<!--END .entry-content-->
					</div>

				<!--END #post-0-->
				</div>

			<?php endif; ?>
			<!--END #primary .hfeed-->

Into this page that pulls in custom posts. But I’m not sure how this is done. Could anyone be kind enough to shed some light…?

<?php
/*
Template Name: Case Studies
*/
?>

<?php get_header(); ?>
			<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
            <!--BEGIN .portfolio-sidebar -->
			<?php ?>
            <?php endwhile; endif; ?>

            <?php  $query = new WP_Query();
				   $query->query('post_type=case-studies&posts_per_page=6'); ?>

            <!--BEGIN #primary .hfeed-->
			<div class="hfeed">

                <!--BEGIN #columns-wrap-->
            	<ul>

                	<?php $count = 1; ?>
                    <?php $odd_or_even = 'odd'; ?>
                	<?php if ($query->have_posts()) : while ($query->have_posts()) : $query->the_post();
                    	  $terms = get_the_terms( get_the_ID(), 'skill-type' );  ?> 

                    <li data-id="id-<?php echo $count; ?>" class="<?php if($terms) : foreach ($terms as $term) { echo 'term-'.$term->term_id.' '; } endif; ?> <?php echo $odd_or_even; ?>">
                    <?php
if ('odd' == $odd_or_even){
  $odd_or_even = 'even';
}else{
  $odd_or_even = 'odd';
}
?>
                        <!--BEGIN .hentry -->
                        <div <?php post_class(); ?> id="post-<?php the_ID(); ?>">	

                            <?php /* if the post has a WP 2.9+ Thumbnail */
                            if ( (function_exists('has_post_thumbnail')) && (has_post_thumbnail()) ) { ?>
                            <div class="post-thumb">
                                <a title="<?php printf(__('Permanent Link to %s', 'framework'), get_the_title()); ?>" href="<?php the_permalink(); ?>"><?php the_post_thumbnail('case-study'); /* post thumbnail settings configured in functions.php */ ?></a>
                            </div>
                            <?php } ?>

                            <div class="entry-wrapper"><h2 class="entry-title"><a href="<?php the_permalink(); ?>" rel="bookmark" title="<?php printf(__('Permanent Link to %s', 'framework'), get_the_title()); ?>"> <?php the_title(); ?></a> <?php edit_post_link( __('edit', 'framework'), '<span class="edit-post">[', ']</span>' ); ?></h2>

                            <!--BEGIN .entry-content -->
                            <div class="entry-content">

                                <?php the_excerpt(); ?>
                                <a href="<?php the_permalink(); ?>" class="more-link"><?php _e('Read more...', 'framework'); ?></a>

                            <!--END .entry-content -->
                            </div>
                            </div>

                        <!--END .hentry-->
                        </div>

                    </li><hr />
                    <?php $count++; ?>
                    <?php endwhile; endif; ?>

                    <?php wp_reset_query(); ?>

                <!--END #one-columns-->
                </ul>

			<!--END #portfolio-wrap-->
			</div>

<?php get_footer(); ?>

Thanks