/public_html/includes/templates/template/templates/tpl_index_default.php に書けばトップだけに表示されます。
以下はSQLサンプル。
<?php
$languages_id = $_SESSION['languages_id'];
$sql = "SELECT a.categories_name, a.categories_id FROM " . TABLE_CATEGORIES_DESCRIPTION
. " a, " . TABLE_CATEGORIES . " b WHERE a.categories_id = b.categories_id
and a.feature_flg = 1 and a.language_id =" . $languages_id . " and b.parent_id
= 18;";
$dbdata = $db->Execute($sql);
while (!$dbdata->EOF) {
echo "<p><a href=¥"http://www.sample.com/index.php?main_page=index&cPath=11_18_".$dbdata->fields['categories_id']
."¥">" . $dbdata->fields['categories_name'] . "</a></p>";
$dbdata->MoveNext();
}
?>



