latest dated post not showing

Is this related to this thread?
https://www.ads-software.com/support/topic/154622?replies=7

If not, check Template_Hierarchy to understand which file to find where your posts are displayed. It probably is your theme’s index.php file.

Also see:
The Loop
Stepping Into Templates

can u give me a work around for this …. as its not exactly in reverse order its in the order by the ID.

what can i put in the XXXXXXX in the line below so that I get the posts in date modified entry order (last one first)

thanks!

$posts=query_posts($query_string . ‘orderby=XXXXXXX’);

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>