Changing link for pictures to User Profile instead of Guestbook

Hey,

I am trying to change the link of the pictures to point to the User Profiles of the users instead of their guestbook.

How would I achieve it with this code?

  <div class="guestbook-author" style="float:left;">
    <?php
    if ($entry['author'] == 0) {
     print "<strong>" . check_plain($entry['anonname']) . "</strong>>";
    } else {
     print "<strong>" . theme('guestbook_user_picture', $entry['author']) ."</strong>";
    }
    ?>
  </div>

That's the code that I use for displaying the picture and the name of the comment author in the guestbook. I also use a guestbook-entry.tpl.php page to do this.

Thanks alot!

Charles