look like : (http://www.2shared.com/photo/itFZSj2A/historique.html)

Add 2 new files
1-upload\scp\ticketsinviewticket.php
(http://www.2shared.com/file/hUT9uT4u/ticketsinviewticket.html)
2-include\staff\ticketsviewinticket.inc.php
(http://www.2shared.com/file/73ryvApL/ticketsviewinticketinc.html)
modify
include\staff\viewticket.inc.php
find:
//get answers for messages
$sql='SELECT resp.*,count(attach_id) as attachments FROM '.TICKET_RESPONSE_TABLE.' resp '.
' LEFT JOIN '.TICKET_ATTACHMENT_TABLE." attach ON resp.ticket_id=attach.ticket_id AND resp.response_id=attach.ref_id AND ref_type='R' ".
' WHERE msg_id='.db_input($msg_row).' AND resp.ticket_id='.db_input($id).
' GROUP BY resp.response_id ORDER BY created';
$resp =db_query($sql);
while ($resp_row = db_fetch_array($resp)) {
$respID=$resp_row;
?>
<table align="center" class="response" cellspacing="0" cellpadding="1" width="100%" border=0>
<tr><th><?=Format:($resp_row)?> - <?=$resp_row?></th></tr>
<?if($resp_row>0){ ?>
<tr class="header">
<td><?=$ticket->getAttachmentStr($respID,'R')?></td></tr>
<?}?>
<tr><td> <?=Format:($resp_row)?></td></tr>
</table>
<?}
$msgid =$msg_row;
}?>
</div>
</div>
add below:
<? // pour voir l'historique des tickets précédents ?>
<div style="margin: 0 auto; width%; height;">
<br><center>historique des tickets precedents</center>
<object type="text/html" data="ticketsinviewticket.php?a=search&query=<?echo $ticket->getphone();?>" style="width%; height%; margin%;">
</object></div>
<table align="center" cellspacing="0" cellpadding="3" width="90%" border=0>
<?if($_POST!='process') {?>
<tr> <td align="center">
<?if($errors) {?>
<p align="center" id="errormessage"><?=$errors?></p>
<?}elseif($msg) {?>
<p align="center" id="infomessage"><?=$msg?></p>
<?}?>
</td></tr>
<?}?>
<? // FIN pour voir l'historique des tickets précédents ?>