/index.php does not comes

hy friends this is my website:

http://caytech.net/index.php

now when you click on any Today's Special product on main webpage it saws wrong link:

see .netindex.php comes together right now.

http://www.caytech.netindex.php/?main_page=------

it should be

http://www.caytech.net/index.php?main_page=-----

i saw you my configure file.
you can see my php info file at

ww.caytech.net/phpinfo.php

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define('HTTP_SERVER', 'http://www.caytech.net');
define('HTTPS_SERVER', 'https://www.caytech.net');

// Use secure webserver for checkout procedure?
define('ENABLE_SSL', 'false');

// NOTE: be sure to leave the trailing '/' at the end of these lines if you make changes!
// * DIR_WS_* = Webserver directories (virtual/URL)
// these paths are relative to top of your webspace ... (ie: under the public_html or httpdocs folder)
define('DIR_WS_CATALOG', '');
define('DIR_WS_HTTPS_CATALOG', '');

define('DIR_WS_IMAGES', 'images/');
define('DIR_WS_INCLUDES', 'includes/');
define('DIR_WS_FUNCTIONS', DIR_WS_INCLUDES . 'functions/');
define('DIR_WS_CLASSES', DIR_WS_INCLUDES . 'classes/');
define('DIR_WS_MODULES', DIR_WS_INCLUDES . 'modules/');
define('DIR_WS_LANGUAGES', DIR_WS_INCLUDES . 'languages/');
define('DIR_WS_DOWNLOAD_PUBLIC', DIR_WS_CATALOG . 'pub/');
define('DIR_WS_TEMPLATES', DIR_WS_INCLUDES . 'templates/');

define('DIR_WS_PHPBB', '/');

// * DIR_FS_* = Filesystem directories (local/physical)
//the following path is a COMPLETE path to your Zen Cart files. eg: /var/www/vhost/accountname/public_html/store/
define('DIR_FS_CATALOG', '//usr/local/apache2/misc/23/699/532/568/user/web/caytech.net/');

define('DIR_FS_DOWNLOAD', DIR_FS_CATALOG . 'download/');
define('DIR_FS_DOWNLOAD_PUBLIC', DIR_FS_CATALOG . 'pub/');
define('DIR_WS_UPLOADS', DIR_WS_IMAGES . 'uploads/');
define('DIR_FS_UPLOADS', DIR_FS_CATALOG . DIR_WS_UPLOADS);
define('DIR_FS_EMAIL_TEMPLATES', DIR_FS_CATALOG . 'email/');

// define our database connection
define('DB_TYPE', 'mysql');
define('DB_PREFIX', '');
define('DB_SERVER', 'sql7.bravehost.com');
define('DB_SERVER_USERNAME', 'xxxxxxx');
define('DB_SERVER_PASSWORD', xxxxxxxx');
define('DB_DATABASE', 'xxxxxxx');
define('USE_PCONNECT', 'false'); // use persistent connections?
define('STORE_SESSIONS', 'db'); // use 'db' for best support, or '' for file-based storage

// The next 2 "defines" are for SQL cache support.
// For SQL_CACHE_METHOD, you can select from: none, database, or file
// If you choose "file", then you need to set the DIR_FS_SQL_CACHE to a directory where your apache
// or webserver user has write privileges (chmod 666 or 777). We recommend using the "cache" folder inside the Zen Cart folder
// ie: /path/to/your/webspace/public_html/zen/cache -- leave no trailing slash
define('SQL_CACHE_METHOD', 'none');
define('DIR_FS_SQL_CACHE', '/usr/local/apache2/misc/23/699/532/568/user/web/caytech.net/cache');

?>

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can you help me ...its very urgent for me

thanks

vr4indian######################
vishal.comp######################