necroob on "[Plugin: WP-PageNavi] Paginate with wp pagenavi on a Page"

Hi! I’m using a page (not a post) to show the childs of that page in list and i wanna use wp_pagenavi to break the page because it has a lot of subpages. Let’s say i have 50 child and i wanna show only 25 and then to be a page2 where you can see the next 25 pages. I’m using this code to get the child pages, but i don’t know how to get the wp_pagenavi working with it. So.. can you help me in any way?

<?php 

/**
 * Template Name: pagina categorie
 */

 ?>
<?php get_header(); ?>
	<div class="content">
		<?php tie_breadcrumbs() ?>

		<?php if ( ! have_posts() ) : ?>
			<div id="post-0" class="post not-found post-listing">
				<h1 class="post-title"><?php _e( 'Not Found', 'tie' ); ?></h1>
				<div class="entry">
					<p><?php _e( 'Apologies, but no results were found for the requested archive. Perhaps searching will help find a related post.', 'tie' ); ?></p>
					<?php get_search_form(); ?>
				</div>
			</div>
		<?php endif; ?>

		<?php if ( have_posts() ) while ( have_posts() ) : the_post(); ?>
		<?php $get_meta = get_post_custom($post->ID);  ?>
		<?php //Above Post Banner
		if( empty( $get_meta["tie_hide_above"][0] ) ){
			if( !empty( $get_meta["tie_banner_above"][0] ) ) echo '<div class="ads-post">' .htmlspecialchars_decode($get_meta["tie_banner_above"][0]) .'</div>';
			else tie_banner('banner_above' , '<div class="ads-post">' , '</div>' );
		}
		?>

		<article class="post-listing post">
			<?php tie_include( 'post-head' ); // Get Post Head template ?>
			<div class="post-inner">
				<h1 class="post-title"><?php the_title(); ?></h1>
				<p class="post-meta"></p>
				<div class="clear"></div>
				<div class="entry">
					<?php the_content(); ?>

<!--Incepe cod pentru afiliere-->
<center>
<ul class="product_list">
<?php
	$pages = get_pages('child_of='.$post->ID.'&sort_column=post_title');
	$count = 0;
	foreach($pages as $page)
	{?>

<li>
        <div class="product_layout">
  <div class="thumb1"><a href="<?php echo get_page_link($page->ID) ?>"><?php echo get_the_post_thumbnail($page->ID, 'thumbnail'); ?></a>
  <a href="<?php echo get_page_link($page->ID) ?>" title="<?php echo $page->post_title ?>"><?php $thetitle=$page->post_title; $getlength = strlen($thetitle);
$thelength = 18;
echo substr($thetitle, 0, $thelength);
if ($getlength > $thelength) echo "..."; ?></a></div>
    <div class="bottom"></div> 

</li>

	<?php }

?>
 </ul></center>
 <div id="clear"></div>

<!--Se termina cod afiliere-->
		<?php wp_link_pages( array( 'before' => '<div class="page-link">' . __( 'Pages:', 'tie' ), 'after' => '</div>' ) ); ?>

					<?php edit_post_link( __( 'Edit', 'tie' ), '<span class="edit-link">', '</span>' ); ?>
				</div><!-- .entry /-->	

			</div><!-- .post-inner -->
		</article><!-- .post-listing -->
		<?php endwhile; ?>

		<?php //Below Post Banner
		if( empty( $get_meta["tie_hide_below"][0] ) ){
			if( !empty( $get_meta["tie_banner_below"][0] ) ) echo '<div class="ads-post">' .htmlspecialchars_decode($get_meta["tie_banner_below"][0]) .'</div>';
			else tie_banner('banner_below' , '<div class="ads-post">' , '</div>' );
		}
		?>

		<?php comments_template( '', true ); ?>
	</div><!-- .content -->

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

http://wordpress.org/extend/plugins/wp-pagenavi/