here is what worked:
$gcomments = mysql_query("SELECT users.user_id, users.username, users.platform, users.comments, users.rank_id, users.rank, comments.comment_id, comments.person_id, comments.user_id, comments.comment, comments.date FROM comments JOIN users ON (comments.user_id = users.user_id) WHERE person_id='$personid' ORDER BY comment_id DESC",$connection);
Thanks
Ryan