Hi
You cannot change the view of duplicate detection page. It's a dialog not an entity. Most of the fields in duplicate detection page comes from the lookup view of an entity. if you change the lookup view, you can see the changes in the duplicate detection
page. Duplicate detection page does add some columns like status, modified on and fields involved in duplicate detection rules to the page automatically.
I hope this helps.
Amreek singh Senior CRM Consultant CDC Praxa Sydney,Australia http://mscrmshop.blogspot.com/