Login script: Session fejl

Hej,

Jeg har et problem et login jeg er ved at lave.
Scriptet ser således ud:

<?
           
            $db = mysql_connect("xxxx", "xxxx", "xxxx");
              mysql_select_db("free12826", $db);
             
              $res = mysql_query("SELECT bruger, password FROM login WHERE bruger='$bruger' AND password='$password'");
             
              if (mysql_num_rows($res)==1) {
                  include("login/login.php");
                 
                  session_start();
                  $_session['login'] = "1";
                  $_session['bruger'] = "$bruger";
                  $_session['password'] = "$password";
                 
              } else {
             
              ?>

Fejlmelding:

Warning: Cannot send session cookie - headers already sent by (output started at /var/www/hotels/1go/hardbyte/html/index.php:6) in /var/www/hotels/1go/hardbyte/html/right.php on line 43

Warning: Cannot send session cache limiter - headers already sent (output started at /var/www/hotels/1go/hardbyte/html/index.php:6) in /var/www/hotels/1go/hardbyte/html/right.php on line 43

I kan eventuelt selv prøve på www.hardbyte.1go.dk (bruger: test | pass: test)