Need help authoring widget

I am a newbie at php, trying to write a widget to display a simple friends list from the Friend List plugin for WPMU. I am able to activate my widget on the plugins page, but I can’t get it to show up on the sidebar widgets menu.

Following is the code. What am I doing wrong?


<?php
/*
Plugin Name: My Friends Widget
Plugin URI: http://software.elohigadugi.org/
Description: Returns friends list when used with Friend List plugin.
Version: 0.01
Author: Tsalagi Red
Author URI: http://software.elohigadugi.org/
*/
function widget_myfriendswidget_init() {
if ( !function_exists('register_sidebar_widget'))
return;
function widget_myfriendswidget($args) {
echo $before_widget;
echo $before_title . 'My Friends' . $after_title;
list_friends('display', '', '');
echo $after_widget;
}
register_sidebar_widget('My Friends Widget', 'widget_myfriendswidget');
add_action('plugins_loaded', 'widget_myfriendswidget_init');
}
?>