ya instale el plugin, ahora que plantillas debo modificar o que poner! por fas!

Aqui el postbit:

<if $post['pid'] == 1 then>
{$ignore_bit}
 <div class="post_wrapper" style="{$post_visibility}" id="post_{$post['pid']}">
     <div class="post_author pb_author_classic">
         <a name="pid{$post['pid']}" id="pid{$post['pid']}"></a>
         <span class="largetext">{$post['profilelink']}</span> {$post['onlinestatus']}<br />
         <span class="smalltext">
             {$post['usertitle']}<br />
             {$post['userstars']}
             {$post['groupimage']}<br />
             {$post['useravatar']}<br />
             {$post['user_details']}
         </span>
     </div>
     <div class="post_content">
         <div class="post_body">
             <div class="post_title"><span class="float_right">{$post['postdate']} {$post['posttime']} {$post['posturl']}</span>{$post['icon']}{$post['subject']} {$post['subject_extra']}</div>
             <div id="pid_{$post['pid']}" style="padding: 8px 0;">
                 {$post['message']}
             </div>
             {$post['attachments']}
             {$post['signature']}
             <div class="post_meta" id="post_meta_{$post['pid']}">
                 {$post['iplogged']}
                 <div id="edited_by_{$post['pid']}">{$post['editedmsg']}</div>
             </div>
         </div>
         
 <div class="post_buttons">
                        
             {$post['button_warn']}{$post['button_report']}{$post['button_multiquote']}{$post['button_quote']}{$post['button_quickdelete']}{$post['button_edit']}{$post['button_delete_pm']}{$post['button_forward_pm']}{$post['button_replyall_pm']}{$post['button_reply_pm']}
             {$post['button_email']}{$post['button_pm']}{$post['button_www']}{$post['button_find']}{$post['button_rep']}
     </div>    
     </div>
     <div class="clear"></div>
 </div>
<else>
codigo para las respuestas, puede ser el mismo de arriba.
</if> 

bueno , en el codigo respuesta de usuarios

como haria para que salga solo el nick y el vatar!

Este seria el codigo mas o menos creo:

{$ignore_bit}
 <div class="post_wrapper" style="{$post_visibility}" id="post_{$post['pid']}">
     <div class="post_author pb_author_classic">
         <a name="pid{$post['pid']}" id="pid{$post['pid']}"></a>
         <span class="largetext">{$post['profilelink']}</span> {$post['onlinestatus']}<br />
         <span class="smalltext">
             {$post['useravatar']}<br />
         </span>
     </div>
     <div class="post_content">
         <div class="post_body">
             <div class="post_title"><span class="float_right">{$post['postdate']} {$post['posttime']} {$post['posturl']}</span>{$post['icon']}{$post['subject']} {$post['subject_extra']}</div>
             <div id="pid_{$post['pid']}" style="padding: 8px 0;">
                 {$post['message']}
             </div>
             {$post['attachments']}
             {$post['signature']}
             <div class="post_meta" id="post_meta_{$post['pid']}">
                 {$post['iplogged']}
                 <div id="edited_by_{$post['pid']}">{$post['editedmsg']}</div>
             </div>
         </div>
         
 <div class="post_buttons">
                        
             {$post['button_warn']}{$post['button_report']}{$post['button_multiquote']}{$post['button_quote']}{$post['button_quickdelete']}{$post['button_edit']}{$post['button_delete_pm']}{$post['button_forward_pm']}{$post['button_replyall_pm']}{$post['button_reply_pm']}
             {$post['button_email']}{$post['button_pm']}{$post['button_www']}{$post['button_find']}{$post['button_rep']}
     </div>    
     </div>
     <div class="clear"></div>
 </div>

Coloca {$post['groupimage']}<br /> antes de {$post['useravatar']}<br /> si quieres la imagen de grupo tambien.