A proper way to replace wp_get_archives()?

I’m working on enhancing Christopher Hwang’s WP-dTree; a plugin that generates a sweet dynamic javascript archive for your blog.

To have WP-dTree display the archive tree a user must manually add code to sidebar.php:

<li>
<h2>Archives</h2>
<ul>
	<?php
	if (function_exists('silpstream_wp_dtree_get_archives'))
	{
	     silpstream_wp_dtree_get_archives();
	}
	else
	{
		wp_get_archives('type=monthly');
	}
	?>
</ul>
</li>

Is there any hook I can use to automagically override or replace the calls to wp_get_archives, wp_list_categories and wp_list_pages with WP-dTree’s equivalents?

Any help would be much appreciated!