Hi all,
I am watching a tutorials on php but would like to know how I can have my nav bars in a external php file and embed it into the main website.
I want this as I change my menu every few months and this would help me alot as I will not have to change every single page.

Just create a common nav bar (this usually applies to headers and footers as well), and include it:

http://us2.php.net/manual/en/function.include.php

Ex:

PHP Code:

include('sidebar.php'); 


ok, so I can copy the code from my homepage, paste it into a file say verticlenav.php and the same with the horizontal nav.
Do I need to change the index.html to index.php ?

Yes, you need to change your index file to a .php file. You're index.php file should look something like this:

PHP Code:

<?php
include('nav.php');
?>

your index html code here