Ok, I looked at the melayu-boleh-theme and it should be pretty straight forward. If you're familiar with the default (Kubrick) theme it needs a div in The Loop that has the id of each post. You'll need to edit the files index.php, single.php, and page.php.
The changes for index.php and single.php are the same. After the while statement but before the div insert one more div like this:
<?php while (have_posts()) : the_post(); ?>
<div <?php post_class() ?> id="post-<?php the_ID(); ?>">
<div class="box4">
Then that div gets closed before the endwhile statement like this:
</div>
<?php endwhile; ?>
The page.php file is almost the same too. Insert a new div after the while statement:
<?php while (have_posts()) : the_post(); ?>
<div class="post" id="post-<?php the_ID(); ?>">
<div class="box4">
And then close it before the endwhile statement:
</div>
<?php endwhile; ?>