Contact JayP, he was there a month ago and got a kite in.
Unfortunately he landed his new vapor on some barbed wire, so that was his only kite for the trip, but he can give you the laydown.
He just posted a thread on an upcoming kitesurf exploratory trip in PNG - get his details from that.
www.seabreeze.com.au/forums/topic.asp?TOPIC_ID=31429