Excerpt text wrap around post thumbnail image??

Hi all,
I am hoping this is an easy fix. Can anyone tell me what to add to this code to make the excerpt text wrap around the post thumbnail image? Thank you very much for your help. Most appreciated.

[mod: please use the code button when posting code, to keep it intact and readable]

<?php if(get_post_meta($post->ID, ‘postImage’, true) != NULL) { ?>

<div class=”post-thumb”>

“><img src=”<?php bloginfo(‘template_url’); ?>/includes/timthumb.php?q=100&w=280&h=100&zc=1&src=<?php echo get_post_meta($post->ID, ‘postImage’, true) ?>” alt=”” />

</div>
<?php } ?>

<?php the_excerpt(); ?>
” title=”Read More <?php the_title(); ?>” class=”more-link”>Read More?