How to adsense code by author of post

[zheive]

Hello, at first sorry for my bad english, i'm spanish.

I have a question. I like integrate adsense by creator post, the same schema at this for wordpress:

<?php elseif(get_the_author() == '1') : ?>
<div style="display:block;float:left;padding-left: 3px;padding-top: 16px;padding-right: 5px;padding-bottom: 16px;">

Adsense code

</div>

<?php elseif(get_the_author() == '2') : ?>
<div style="display:block;float:left;padding-left: 3px;padding-top: 16px;padding-right: 5px;padding-bottom: 16px;">

Adsense code 2

</div>
<?php else : ?>
<div style="display:block;float:left;padding-left: 3px;padding-top: 16px;padding-right: 5px;padding-bottom: 16px;">

Adsense code 3

</div>
<?php endif; ?>
<?php the_content(); ?>

How can i do it for vBulletin 3.x?