Warning: mysql_pconnect() [function.mysql-pconnect]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /home/clients/www/marylingerie.com/www/CMS/Connections/localhost.php on line 9
means that the SQL Server name you provided is not correct.
$hostname_localhost = "localhost";
$hostname_localhost = "127.0.0.1";
if that still does not work, you will need to contact your host for the correct MySQL server name to use in the connection file.
Neilo, thanks for your help in getting this far.