howto make opera use duckduckgo.com as defalt search engine

open up manage search engines with little hourglass next to search box
open details
make new entry
in addresse part put:
http://www.duckduckgo.com?q=%s
in query string part put:
"%s search"
and click use post button
then save
try cats in search bar and watch duckduckgo open and search for cats!! YEAHEAHEHA!!
PS I deleted all other searches, since duck gives option to search goog or bing if nothing comes back