listelemede hata

arkadaşlar şu listelemeyi bi türlü yapamıyorum ya

echo"<tr><td>
<table border=\"1\" cellpadding=\"0\" cellspacing=\"0\" style=\"border-collapse: collapse\" bordercolor=\"#CC3300\" width=\"50%\" id=\"AutoNumber1\" bgcolor=\"#FFFFFF\">
<tr>
<td width=\"100%\">
<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" style=\"border-collapse: collapse\" bordercolor=\"#111111\" width=\"100%\" id=\"AutoNumber2\" height=\"28\">
<tr>";
$i = 0;
while($thread_get=mysql_fetch_array($thread_sql))
{
$lastpost = $thread_get['lastpost'];
$poster = $thread_get['lastposter'];
$tid = $thread_get['threadid'];
$psql = mysql_query("SELECT postid FROM post WHERE threadid=$tid ORDER BY postid DESC");
$getp=mysql_fetch_array($psql);
$pid = $getp['postid'];
$date2 = date ("m/d/y h:i A" ,$lastpost);
$title = $thread_get['title'];
$title = substr($title,0,$txtlimit);

$i = $i+1;
echo"<td width=\"100%\" height=\"18\">
<p align=\"center\"><b><font face=\"verdana,arial,geneva\"><a href=\"$forum_url/showthread.php?p=$pid#post$pid\" target=\"_blank\">
<FONT COLOR=\"#CC3300\" face=\"Arial\" size='2'>$title</FONT></a></font></b></td>
</tr>
<tr>
<td width=\"100%\" height=\"10\">
<p align=\"center\"><font color=\"#111111\">
<font color=\"$postedcolor\" face=\"Arial\" size='1'>gönderen: $poster </FONT>
<font face=\"Arial\" size=\"1\"></td>";
if($i % 3 == 0){echo '</tr>';}
}
echo"</font></font></td>
</tr>
</table>
</td>
</tr>
</table>";

gene olmadı

$i = $i+1;

dan önce

if($i % 3 == 0){echo '<tr>';}

kullanmayı dene. </tr> yi kapatıyorsun döngüde ama yeni bir <tr> açmıyorsun