change:
$LINKS{build_sort_order} = "isNew,isPopular,Rating,Title";
$LINKS{build_sort_order} = "Rating DESC, Title";
Or whatever... you use ASC and DESC right after the field name, but before the comma.
$LINKS{build_sort_order} = "isNew,isPopular,Rating,Title";
$LINKS{build_sort_order} = "Rating DESC, Title";
Or whatever... you use ASC and DESC right after the field name, but before the comma.