$getnews = mysql_query"SELECT * FROM news ORDER BY id DESC LIMIT 10" or die (mysql_error());
$number = 0;
while ($allnews = mysql_fetch_array($getnews)) {
$number++;
echo "$allnews[title]<br/>$allnews[desc]";
if ($number == 5) {
echo "допълнителен текст към петата новина";
}
}