kolonne problem (mysql)

$result = @ mysql_query("select * from tabel");

while($row = @ mysql_fetch_array($result)){
  echo $row["kunde_ID"] . ' : ' . $row["firmanavn"] . "<br>";
}

jeg takker

$sql = "SELECT kunde_ID, firmanavn FROM ???";

$connection = mysql_connect("hostname", "username", "password") or die(mysql_error());
mysql_select_db("database") or die(mysql_error());

$result = mysql_query($sql) or die(mysql_error());

if (mysql_num_rows($result) != 0)
{
  $str_res = '<table>';
  while ($row = mysql_fetch_array($result))
    $res .= "<tr><td>".$row['kunde_id']."</td><td>".$row['firmanavn']."</td></tr>";
  $str_res .= '</table>';

  print $str_res;
}
else
  print "Ingen information";

mysql_close($connection) or die(mysql_error());