Custom sidebars with divs

Not sure if this is the correct place to put this but I recently got my side bar to work using divs instead of the default lists.
Here is the code I have in my functions.php…

<?php
if ( function_exists('register_sidebar') )
    register_sidebar(array(
  'before_widget' => '<div id="%1$s" class="widget %2$s">',
  'after_widget' => "</div>",
  'before_title' => '<h2>',
  'after_title' => "</h2>"
));

?>

and here is what I have on my sidebar page…

<div id="forumposts" class="welcome">
  <?php if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar() ) : ?>

  <?php endif; ?>
</div>

What I need to know is how to make the custom sidebars using this div method