Coding Help side navigation

Hi,

This is default navigation:

wp_list_pages("title_li=");

This is a code that displays only the child pages under current page:

<?php
global $wp_query;
if( empty($wp_query->post->post_parent) ) {
$parent = $wp_query->post->ID;
} else {
$parent = $wp_query->post->post_parent;
}
wp_list_pages(“title_li=&child_of=$parent”);
?> `

Ok, I need a code that builds the following side nav:

<Home Page>
<Parent pages before current page>
<current page / parent of current page>
<pages under parent of current page>
<rest of parent pages>

please help me write the code.