그룹을 선택하는 셀렉트 박스가 보이실 겁니다.
셀렉트 박스를 변경하면 상단 주소도 변경되니 참고하시기 바랍니다.

new.skin.php 파일입니다. 여기서 어디를...
=========================================

<?
if (!defined("_GNUBOARD_")) exit; // 개별 페이지 접근 불가
?>

<!-- 분류 시작-->
<form id="fnew" name="fnew" method="get">
<table width="100%" align="center" border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="3"><img src="<?=$new_skin_path?>/img/search_left.gif" alt=""></td>
<td style="background: transparent url(<?=$new_skin_path?>/img/search_bg.gif) repeat-x scroll 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" align="center" width="66"><img src="<?=$new_skin_path?>/img/setting.gif" alt=""></td>
<td style="background: transparent url(<?=$new_skin_path?>/img/search_bg.gif) repeat-x scroll 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" height="30">

<?=$group_select?>
<select id="view" name="view" onchange="select_change()" style="margin-left: 10px;">
<option value="">전체게시물</option>
<option value="w">원글만</option>
<option value="c">코멘트만</option></select>

<img src="<?=$new_skin_path?>/img/id.gif" alt="" style="margin: 0pt 10px 0pt 50px;" align="absmiddle">
<input id="mb_id" name="mb_id" value="" style="width: 120px; height: 18px;" type="text">
<input src="<?=$new_skin_path?>/img/btn_search.gif" align="absmiddle" type="image">
<script language="JavaScript">
function select_change()
{
document.fnew.submit();
}
document.getElementById("gr_id").value = "<?=$gr_id?>";
document.getElementById("view").value = "<?=$view?>";
</script></td>
<td width="3"><img src="<?=$new_skin_path?>/img/search_right.gif" alt=""></td>
</tr>
</table>
</form>
<!--분류 끝 -->


<!-- 제목 시작 -->
<table style="margin-top: 20px;" align="center" border="0" cellpadding="0" cellspacing="2" width="97%">
<tr>
<td bgcolor="#0a7299" height="2"></td>
<td bgcolor="#0a7299" height="2"></td>
<td bgcolor="#a4b510" height="2"></td>
<td bgcolor="#a4b510" height="2"></td>
</tr><tr align="center">
<td align="center" height="20" width="100">그룹</td>
<td align="center" width="">제목</td>
<td align="center" width="80">이름</td>
<td align="center" width="50">날짜</td>
</tr>
<tr>
<td colspan="4" style="background: transparent url(<?=$new_skin_path?>/img/bg_title.gif) repeat-x scroll left bottom; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; height: 3px;"></td>
</tr>
<?
for ($i=0; $i<count($list); $i++)
{
$gr_subject = cut_str($list[$i][gr_subject], 20);
$bo_subject = cut_str($list[$i][bo_subject], 20);
$wr_subject = get_text(cut_str($list[$i][wr_subject], 80));

echo <<<HEREDOC
<tr>
<td align="center" height="30"><a href='./new.php?gr_id={$list[$i][gr_id]}'><span class="small">{$gr_subject}</span></a></td>
<td style="padding-left: 5px;">[<a href='./board.php?bo_table={$list[$i][bo_table]}'><span class="small">{$bo_subject}</span></a>] <a href='{$list[$i][href]}'><font color="gray"><span class="small">{$list[$i][comment]}{$wr_subject}</span></font></a></td>
<td align="center"><nobr style="overflow: hidden; display: block; width: 75px;">{$list[$i][name]}</td>
<td align="center">{$list[$i][datetime2]}</td>
</tr>
<tr><td colspan="4" bgcolor="#e7e7e7" height="1"></td></tr>
HEREDOC;
}
?>

<? if ($i == 0) { ?>
<tr><td colspan="9" height=50 align=center>게시물이 없습니다.</td></tr>
<? } ?>
<tr>
<td colspan="4" align="center" height="30"><?=$write_pages?></td>
</tr>
<tr><td colspan="4" bgcolor="#c0c0c0" height="2"></td></tr>
</table>