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>