Extending CI_Config class problem

[eluser]gigowski[/eluser]
It isn't the core config class that I am trying to load. I want to load my config class which extends the core config class. How can I do that? When I comment out the line:

Code:

//$this->load->library('config');
$this->config->db_config_fetch();

I get this error:

Fatal error: Call to undefined method: ci_config->db_config_fetch() in /homepages/42/d187750613/htdocs/lilcharacters/system/application/controllers/shop.php on line 8

I need it to load system/application/libraries/MY_Config.php but I can't figure out how.