Whenever I attempt to run an admin module (http://mydomain.com/admin1/default.php) I receive an error at the top of my browser. Below the error line I could see the Administration page an all the management options.ie configuration, Modules, Catalog etc

I have set the folder and file security to 755 CHMOD and this has made no difference. Any ideas please? Thanks in advance

Warning: Unable to access /home/virtual/site9/fst/var/www/html/http://mydomain.com/includes/data/rates.php in /home/virtual/site9/fst/var/www/html/admin1/includes/include_once.php on line 4

Warning: Failed opening '/home/virtual/site9/fst/var/www/html/http://mydomain.com/includes/data/rates.php' for inclusion (include_path='.:/php/includes:/usr/share/php') in /home/virtual/site9/fst/var/www/html/admin1/includes/include_once.php on line 4