<ul>
<?php
global $post;
$myposts = get_posts('numberposts=3&category=3'); //change here
foreach($myposts as $post) :
?>
<li><h3><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a> <br />
Kategori: <?php the_time('M jS, Y') ?> | <?php comments_popup_link('Yorumsuz »', '1 Yorum »', '% Yorum »'); ?></h3>
</li>
<?php endforeach; ?>
</ul>