Under Settings >> Discussion is a drop-down box for older or newer comments, will that work?
Unfortunately not in this case.... as per the user's request..
Ideally I only want this to affect that page - no other posts.
You will probably need to open up your theme's comments.php file and place some conditional code around the call to
wp_list_comments.. then additionally update the conditional
wp_list_comments call to define a different sort order..
For checking when it's your given page..
Hope that helps..