글쎄요.. 그룹숫자에서 잘못된건지는 잘모르겠지만.. 일단 제소스를 드릴테니까 비교해보세요.

   <!-- 통합검색 소스 시작-->
                  <table width="190" cellspacing="0" cellpadding="0" border="0">
                    <!--노프레임일 경우에는 target이 필요 없습니다.-->
                    <form name="siche_search" action="http://backzzanggu.com/bbs/ssearch.php" method="get">
                      <input type="hidden" name="sno" value="">
                      <input type="hidden" name="siche" value="search">
                      <input type="hidden" name="page" value="1">
                      <input type="hidden" name="sn" value="1">
                      <input type="hidden" name="ss" value="1">
                      <input type="hidden" name="sm" value="1">
<input type="hidden" name="oga" value="or">
                      <tr>
                        <td align=center> <input type="text" name="search" style='color:#666666; background-color:#FFFFFF; border:1 #CCCCCC solid ;width:100px; height:20px;'>
                          <input name="search" type="image" src="http://backzzanggu.com/bbs/siche_search_skin/siche_search_0_1/search.gif" height=20 align="absmiddle" onfocus='this.blur()'>
                        </td>
                      </tr>
                     </form>
                  </table>
<!-- 통합검색 소스 끝-->