험.... 그냥 주는건줄알고
왔는뎅..... ㅜㅠ

답은 이곳에 있습니다.
http://g4.miwit.com/bbs/board.php?bo_table=g4_qna&wr_id=23922&page=0

<?
// 총 게시물의 갯수
$q_count = mysql_query("select * from $g4[board_table] where bo_table = '게시판아이디'");
$count_write = 0;
while($data=mysql_fetch_array($q_count)) {
$count_write += $data[bo_count_write];
}
?>
붙이고 싶은곳에
(<?=number_format($count_write)?>)개

이렇게 고치면 7일꺼

<div class="sm_border">
<div class="sm_margin">
<?
$sql = "select * from $g4[group_table] ";
if ($gr_id)
$sql .= " where gr_id = '$gr_id' ";
$sql.= " order by gr_1 ";

$qry = sql_query($sql);
for ($i=0; $row=sql_fetch_array($qry); $i++) {
?>
<div class="sm_item">
<div class="sm_title"><a href="<?=$g4[bbs_path]?>/group.php?gr_id=<?=$row[gr_id]?>"><?=$row[gr_subject]?></a></div>
<?
//$sql2 = "select * from $g4[board_table] where gr_id = '$row[gr_id]' order by bo_order_search asc";
$sql2 = "select * from $g4[board_table] where gr_id = '$row[gr_id]' and bo_table != 'B11' order by bo_order_search asc";
$qry2 = sql_query($sql2);
for ($j=0; $row2=sql_fetch_array($qry2); $j++) {

$tmp_write_table = $g4['write_prefix'] . $row2[bo_table]; // 게시판 테이블 전체이름
$tmp_row = sql_fetch(" select count(wr_id) as cnt from $tmp_write_table where wr_is_comment = 0 and wr_datetime > (now() - INTERVAL 7 DAY) ");


if ($row2[bo_table] == $bo_table) $class = "sm_sub selected"; else $class = "sm_sub";
?>
<div class="<?=$class?>"><a href="<?=$g4[bbs_path]?>/board.php?bo_table=<?=$row2[bo_table]?>"><?=$row2[bo_subject]?><?=$tmp_row[cnt];?></a></div>
<? } ?>
</div> <!-- sm_item -->
<? } ?>
</div> <!-- sm_margin -->
</div> <!-- sm_border -->

g4_board.bo_count_write
사용하시면 더 편해요.