Style Pingbacks

<?php foreach ($comments as $comment) : ?>

<?php
$ispingb = false;
if($comment->comment_type == 'pingback') {
$ispingb = true;
}
?>

<?php if($ispingb ) { echo '<div class="pbcomment">';} ?>
<?php comment_text() ?>
<?php if($ispingb ) { echo '</div>';} ?>

That’s about how I have mine, with .pbcomment being defined in the css.
Any use?

http://www.cre8d-design.com/blog/2006/03/27/separating-pingbackstrackbacks-from-comments-in-wordpress-20/

Perhaps that code is more what you are after?