Making a helper/plugin

[eluser]Maglok[/eluser]
To do what? That points to my CI root which looks like this:

Code:

CI/
CI/forum
CI/system/ <-- normal CI dirs
CI/images
etc

At the moment I tried to create a library. I can autoload it, but I cannot use any of the functions in it, like so:

Code:

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* Wrapper class for SSI.php to call functions from within CI by loading as a library
*/
class SMF {

    require_once('forum/SSI.php');

    /**
     * Constructor
     */
    function SMF()
    {    
        log_message('debug', "SMF library Initialized");
    }
    
    // --------------------------------------------------------------------

    /**
     * SSI_welcome wrapper
     */    
    function smf_welcome($output_method = 'echo') {
        ssi_welcome($output_method);
     }
    
    // --------------------------------------------------------------------

}

// END SMF library

I can't call it after I autoload the library and then use smf_welcome() though.