XML_Parser
   To parse the XML files that contain the RSS feeds,
   XML_RSS requires that the package
   XML_Parser is installed. However this
   dependency will be automatically handled by the installer during the
   installation phase of XML_RSS.
  
allow_url_fopen configuration value
   Since most RSS feeds are located on remote hosts,
   one has to ensure that the PHP configuration value
   "allow_url_fopen" is set to "On" before
   running XML_RSS.
  
   To find out the current value of "allow_url_fopen", one
   can use the function ini_get(). To set a new value
   of "allow_url_fopen", you must modify the
   php.ini configuration file of PHP.