New at PHP; easy question!?

Hi, Need to convert the directory location from UNIX notation to WIN32. When I just convert / to \ I get a parse error on the line with DIR_CATALOG. Parse error: parse error in includes\application_top.php on line 7 How come? <? // define our webserver variables define('HTTP_SERVER', 'http://exchange'); define('HTTPS_SERVER', 'https://exchange'); define('ENABLE_SSL', 1); // ssl server enable(1)/disable(0) define('DIR_SERVER_ROOT', '/usr/local/apache/'); define('DIR_CATALOG', '/catalog/'); define('DIR_IMAGES', '/catalog/images/'); define('DIR_INCLUDES', 'includes/'); define('DIR_BOXES', DIR_INCLUDES . 'boxes/'); define('DIR_FUNCTIONS', DIR_INCLUDES . 'functions/'); define('DIR_MODULES', DIR_INCLUDES . 'modules/'); define('DIR_LANGUAGES', DIR_INCLUDES . 'languages/'); Met vriendelijke groet / With kind regards, Simon de Kraa ICL Logistic Systems Simon.de.Kraa@icl.nl --- Microsoft Windows 2000 Professional SP 1, Progress 9.1a19, Roundtable 9..1a SCO UnixWare 7.1.1, Progress 9.1a11