Image uploading widget using database

I’m new at wordpress widget/plugins development and I’ve came to the following problem. I’m trying to do an image uploading widget so i can have a list of images in my sidebar. The idea is to upload the image, save the image path/name in a DB and then retrieve it and show it via the widget.. But.. i get stuck on the creating of the DB… i guess the install function I have is not firing by the hook.. but I have no idea why. Here’s the code so far:

<?php
/*
Plugin Name: Friends List Logos
Author: CSS Slicers
Description: Upload logos to your friends list
Author URI: http://www.cssslicers.com
*/

function widget_friendslist_init() {
	if ( !function_exists('register_sidebar_widget') || !function_exists('register_widget_control') )
		return;	

	function friendslist_install ()
	{
		global $wpdb;

		$table_name = $wpdb->prefix . "friendslist";
		if($wpdb->get_var("show tables like '$table_name'") != $table_name)
		{
			$sql = "CREATE TABLE " . $table_name . " (
			id mediumint(9) NOT NULL AUTO_INCREMENT,
			image VARCHAR(255)NOT NULL,
			name VARCHAR(255) NOT NULL,
			UNIQUE KEY id (id)
			);";

			require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
			dbDelta($sql);
		}
	}

	function widget_friendslist_control()
	{
		global $wpdb;

		$options = $newoptions = get_option('widget_friendslist');
		if ( !is_array($newoptions) )
			$newoptions = array(
				'title' => '',
				'friendslistimage'=> '');
			if ( $_POST['friendslist-submit'] )
			{
				$newoptions['title'] = strip_tags(stripslashes($_POST['friendslist-title']));

				$file_path = "";
				if (strlen(basename( $_FILES['friendslistimage']['name'] )) > 0)
				{
					$file_path = "images/";
					$md5 = md5(microtime () * mktime());
					$uid = substr( $md5,0,10 );
					$file_path = $file_path . $uid . "-" . basename( $_FILES['friendslistimage']['name'] );
					move_uploaded_file($_FILES['friendslistimage']['tmp_name'], $file_path);
				}

				$newoptions['friendslistimage'] = $file_path;

				$table_name = $wpdb->prefix . "friendslist";
				$insert = "INSERT INTO " . $table_name .
				" (title, image) " .
				"VALUES ('" . $newoptions['title'] . "','" . $file_path . "')";

				$results = $wpdb->query( $insert );
			}

			if ( $options != $newoptions )
			{
				$options = $newoptions;
				update_option('widget_friendslist', $options);
			}
		$title = htmlspecialchars($options['title'], ENT_QUOTES);
		$friendslistimage = htmlspecialchars($options['friendslistimage']);

		echo '<ul>';
		echo '<li style="list-style: none;"><label for="friendslist-title">Title: <input style="width: 50%;" id="friendslist-title" name="friendslist-title" type="text" value="'.$title.'" /></label></li>'; ?>
	<?php
		$abdir= get_bloginfo( 'siteurl' ) . '/wp-content/plugins/friendslist/friendslist.php';
		$extplugin = 'advimage' ;
		$getlocalcss = get_bloginfo('stylesheet_url');
		$admincss = $abdir . '/friendslistadmin.css';
	?>
	<?php
		echo '<li style="list-style: none;"><label for="friendslist-friendslistimage">Upload Logo: <input type="file" name="friendslistimage" value="" /></label></li></ul>';
		echo '<input type="hidden" id="friendslist-submit" name="friendslist-submit" value="1" />';
	}

	function widget_friendslist()
	{
		echo '<div class="box">
			<div class="top"></div>
			<div class="box-content">
				<h2>A special thanks to our friends:</h2>
		';
		//printing the images in the database for the friends list
		echo '
			</div>
			<div class="bottom"></div>
		</div><!-- end of box -->';
	}
register_activation_hook(__FILE__,'friendslist_install');
register_sidebar_widget('Friends List Logos', 'widget_friendslist');
register_widget_control('Friends List Logos', 'widget_friendslist_control', 300, 450);
}
add_action('plugins_loaded', 'widget_friendslist_init');
?>