Building a WordPress Plugin Admin Menu Page

plugin_admin_page.php

<?php
add_action('admin_menu', 'plugin_admin_add_page');
function plugin_admin_add_page() {
  //http://codex.wordpress.org/Function_Reference/add_menu_page
  add_menu_page( 'custom menu title', 'custom menu', 'manage_options', 'dbexplorer/adminpage.php');
}

function my_enqueue($hook) {
  //only for our special plugin admin page
  if( 'dbexplorer/adminpage.php' != $hook )
    return;

  wp_register_style('dbexplorer', plugins_url('dbexplorer/pluginpage.css'));
  wp_enqueue_style('dbexplorer');

  wp_enqueue_script('pluginscript', plugins_url('pluginpage.js', __FILE__ ), array('jquery'));
}

add_action( 'admin_enqueue_scripts', 'my_enqueue' );
?>