how can i order the Categories in header like a page?

[mail.marco]

Hi,

Hope someone can help me with this,

in the header ive all the pages in order....

HOME - ABOUT US - SERVICES - CLIENTS - CONTACT - CATEGORIES

i need to put categories in between services and clients....
HOME - ABOUT US - SERVICES - CATEGORIES - CLIENTS - CONTACT
but categories is not a page, and here in the code i just can put it at the beginning or the end.

<div id="navbar">

	<ul id="nav">
		[*]HOME

                <?php wp_list_pages('title_li=&depth=4&sort_column=menu_order'); ?>
		                [*]CATEGORIES
				<ul><?php wp_list_categories('sorderby=name&depth=4&title_li='); ?>[/list]			[/list]    
</div>

thanks!