Order the post

Hej, thanks,
Where do i insert this code ?
This is my defautindex :

<?php if (is_category()) { ?>
	<span class="current-category">
		<?php single_cat_title(__('Currently Browsing: ','Influx'), 'display'); ?>
	</span>
<?php }; ?>

<?php if (is_archive()) $post_number = get_option('influx_archivenum_posts');
	if (is_search()) $post_number = get_option('influx_searchnum_posts');
	if (is_tag()) $post_number = get_option('influx_tagnum_posts');
	if (is_category()) $post_number = get_option('influx_catnum_posts');
	global $query_string; query_posts($query_string . "&showposts=$post_number&paged=$paged"); ?>

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
	<?php $thumb = '';
		  $width = 60;
		  $height = 60;
		  $classtext = 'no_border';
		  $titletext = get_the_title();

		  $thumbnail = get_thumbnail($width,$height,$classtext,$titletext,$titletext);
		  $thumb = $thumbnail["thumb"]; ?>

	<div class="home-post-wrap2">
		<div style="clear: both;"></div>
		<div class="single-entry">
			<?php include(TEMPLATEPATH . '/includes/postinfo.php'); ?>
			<h2 class="titles2"><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php printf(__('Permanent Link to %s','Influx'), get_the_title()) ?>">
				<?php the_title() ?>
				</a></h2>
			<div style="clear: both;"></div>

			<!--Display thumbnail if found-->
			<?php if($thumb != '') { ?>
				<div class="thumbnail-div-3">
					<a href="<?php the_permalink() ?>" title="<?php printf(__('Permanent Link to %s','Influx'), get_the_title()) ?>">
						<?php print_thumbnail($thumb, $thumbnail["use_timthumb"], $titletext, $width, $height, $classtext); ?>
					</a>
				</div>
			<?php }; ?>

			<?php truncate_post(310) ?>
			<div style="clear: both;"></div>

			<div class="readmore">
				<a href="<?php the_permalink() ?>" rel="bookmark" title="<?php printf(__('Permanent Link to %s','Influx'), get_the_title()) ?>"><?php _e('Read More','Influx'); ?></a>
			</div>
		</div>
	</div>
<?php endwhile; ?>
	<div style="clear: both;"></div>
	<?php if(function_exists('wp_pagenavi')) { wp_pagenavi(); }
			  else include(TEMPLATEPATH . '/includes/navigation.php'); ?>
<?php else : ?>
	<?php include(TEMPLATEPATH . '/includes/no-results.php'); ?>
<?php endif; wp_reset_query(); ?>

or in my defaut.php

<?php if (get_option('influx_show_rcenter_column') == 'on') include(TEMPLATEPATH . '/includes/rightcolumn.php'); ?>

<?php if (get_option('influx_duplicate') == 'on') $ids = ''; ?>
<?php $args=array(
		'showposts'=>get_option('influx_homepage_posts'),
		'post__not_in' => $ids,
		'paged'=>$paged,
		'category__not_in' => get_option('influx_exlcats_recent'),
); ?>

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

		<?php $thumb = '';
			  $width = 281;
			  $height = 130;
			  $classtext = 'no_border';
			  $titletext = get_the_title();

			  $thumbnail = get_thumbnail($width,$height,$classtext,$titletext,$titletext);
			  $thumb = $thumbnail["thumb"]; ?>

		<div class="home-post-wrap">
			<div class="thumbnail-div">
				<?php if($thumb != '') { ?>
					<a href="<?php the_permalink() ?>" title="<?php printf(__('Permanent Link to %s','Influx'), get_the_title()) ?>">
						<?php print_thumbnail($thumb, $thumbnail["use_timthumb"], $titletext, $width, $height, $classtext); ?>
					</a>
				<?php } ?>
			</div>
			<h2 class="titles"><a href="<?php the_permalink() ?>" title="<?php printf(__('Permanent Link to %s','Influx'), get_the_title()) ?>">
				<?php truncate_title(26) ?>
				</a></h2>
			<?php truncate_post(410) ?>
			<div style="clear: both;"></div>
			<div class="readmore"><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php printf(__('Permanent Link to %s','Influx'), get_the_title()) ?>"><?php _e('Read More','Influx'); ?></a></div>
		</div>

<?php endwhile; ?>

	<div style="clear: both;"></div>
	<div style="clear: both; margin-bottom: 10px;">
		<?php if(function_exists('wp_pagenavi')) { wp_pagenavi(); }
		else { ?>
			<?php include(TEMPLATEPATH . '/includes/navigation.php'); ?>
		<?php } ?>
	</div>

<?php else : ?>
	<?php include(TEMPLATEPATH . '/includes/no-results.php'); ?>
<?php endif; ?>

It’s not in the sidebar, it’s in my defaultindex/
I tried your code, but it didn’t work
this is the code, i have to change

<div class="home-post-wrap">

			<div class="thumbnail-div">
				<?php if($thumb != '') { ?>
					<a href="<?php the_permalink() ?>" title="<?php printf(__('Permanent Link to %s','Influx'), get_the_title()) ?>">
						<?php print_thumbnail($thumb, $thumbnail["use_timthumb"], $titletext, $width, $height, $classtext); ?>
					</a>
				<?php } ?>
			</div>
			<h2 class="titles"><a href="<?php the_permalink() ?>" title="<?php printf(__('Permanent Link to %s','Influx'), get_the_title()) ?>">
				<?php truncate_title(26) ?>
				</a></h2>
			<?php truncate_post(410) ?>
			<div style="clear: both;"></div>
			<div class="readmore"><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php printf(__('Permanent Link to %s','Influx'), get_the_title()) ?>"><?php _e('Read More','Influx'); ?></a></div>
		</div>

<?php endwhile; ?>