특정 게시판만 글번호를 100번 부터 시작하게 하고 싶습니다.

특정게시판 리스트 번호를 100부터 시작하게 하고 싶습니다.

첫게시글이 100 두번째 게시글이 101, 102, 103..... 이렇게

첫글이 100번 부터 시작하게 하려면 아래 소스중 어디를 수정해야되나여?
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<!-- 목록 -->
<? for ($i=0; $i<count($list); $i++) { ?>
<tr height=29 align=center>
<td width=50>
<?
if ($list[$i][is_notice]) // 공지사항
echo "<img src=\"$board_skin_path/img/icon_notice.gif\">";
else if ($wr_id == $list[$i][wr_id]) // 현재위치
echo "<span style='font:bold 11px tahoma; color:#E15916;'>{$list[$i][num]}</span>";
else
echo "<span style='font:normal 11px tahoma; color:#B3B3B3;'>{$list[$i][num]}</span>";
?>
</td>
<? if ($is_checkbox) { ?><td width=40><input type=checkbox name=chk_wr_id[] value="<?=$list[$i][wr_id]?>"></td><? } ?>
<td align=left style='word-break:break-all;'>
<?
echo $nobr_begin;
echo $list[$i][reply];
echo $list[$i][icon_reply];
if ($is_category && $list[$i][ca_name]) {
echo "<span class=small><font color=red>[<a href='{$list[$i][ca_name_href]}'>{$list[$i][ca_name]}</a>]</font></span> ";
}
$style = "";
if ($list[$i][is_notice]) $style = " style='font-weight:bold;'";

echo "<a href='{$list[$i][href]}' $style>";
echo $list[$i][subject];
echo "</a>";

if ($list[$i][comment_cnt])
echo " <a href=\"{$list[$i][comment_href]}\"><span style='font-family:Tahoma;font-size:10px;color:#EE5A00;'>{$list[$i][comment_cnt]}</span></a>";

// if ($list[$i]['link']['count']) { echo "[{$list[$i]['link']['count']}]"; }
// if ($list[$i]['file']['count']) { echo "<{$list[$i]['file']['count']}>"; }

echo " " . $list[$i][icon_new];

echo " " . $list[$i][icon_link];
echo " " . $list[$i][icon_hot];
echo " " . $list[$i][icon_secret];
echo $nobr_end;
?>
</td>
<td width=110><nobr style='display:block; overflow:hidden; width:105px;'><?=$list[$i][name]?></nobr></td>
<td width=40><div align="left"><span style='font:normal 11px tahoma; color:#848FEE;'>
<?=$list[$i][datetime2]?>
</span></div></td>
<td width=50><span style='font:normal 11px tahoma; color:#BABABA;'>
<?
$parent = $list[$i][wr_parent];
$sql = " select count(*) as cn from $write_table where wr_is_comment = '1' and wr_parent = '$parent' and mb_id = 'admin'";
//echo $sql;
$row = sql_fetch($sql);
$total_count = $row[cn];
if ($total_count == 0) {
echo "<img src='$board_skin_path/img/icon_standby.gif'>";
} else {
echo "<img src='$board_skin_path/img/icon_select.gif'>";
}
?>
</span></td>
<?/*?><td width=40><span style='font:normal 11px tahoma; color:#BABABA;'><?=$list[$i][last2]?></span></td><?*/?>
<? if ($is_good) { ?><td align="center" width=40><span style='font:normal 11px tahoma; color:#BABABA;'><?=$list[$i][wr_good]?></span></td><? } ?>
<? if ($is_nogood) { ?><td align="center" width=40><span style='font:normal 11px tahoma; color:#BABABA;'><?=$list[$i][wr_nogood]?></span></td><? } ?>
</tr>
<tr><td colspan=<?=$colspan?> height=1 bgcolor=#eeeeee></td></tr>
<?}?>
<? if (count($list) == 0) { echo "<tr><td colspan='$colspan' height=100 align=center>게시물이 없습니다.</td></tr>"; } ?>
</table>
</form>


<div style="clear:both; margin-top:7px; height:31px;">
<div style="float:left;">
<? if ($list_href) { ?>
<a href="<?=$list_href?>"><img src="<?=$board_skin_path?>/img/btn_list.gif" align=absmiddle border="0"></a>
<? } ?>
<? if ($is_checkbox) { ?>
<a href="javascript:select_delete();"><img src="<?=$board_skin_path?>/img/btn_select_delete.gif" align=absmiddle border="0"></a>
<a href="javascript:select_copy('copy');"><img src="<?=$board_skin_path?>/img/btn_select_copy.gif" align=absmiddle border="0"></a>
<a href="javascript:select_copy('move');"><img src="<?=$board_skin_path?>/img/btn_select_move.gif" align=absmiddle border="0"></a>
<? } ?>
</div>

<div style="float:right;">
<? if ($write_href) { ?><a href="<?=$write_href?>"><img src="<?=$board_skin_path?>/img/btn_write.gif" border="0"></a><? } ?>
</div>
</div>

<div style="height:1px; line-height:1px; font-size:1px; background-color:#eee; clear:both;">&nbsp;</div>
<div style="height:1px; line-height:1px; font-size:1px; background-color:#ddd; clear:both;">&nbsp;</div>