codice:
mysql_select_db($database_camera, $camera);
$query_Recordset2 = "SELECT SUM(quota) FROM soldi";
$Recordset2 = mysql_query($query_Recordset2, $camera) or die(mysql_error());
$row_Recordset2 = mysql_fetch_row($Recordset2);
$totalRows_Recordset2 = mysql_num_rows($Recordset2);

echo $row_Recordset2[0];
perche' il result set ti arriva come array.