I would like to have full adress of The Immigration Offices at Port Moresby
included Fax and E-Mail if available.
Many thanks for your kind assistance.

I'm not sure if its still the same, but the last I know (1 year ago)is:

Department of Foreign Affairs, Trade & Immigration
Migration and Citizenship Division
PO Box 422
Waigani, NCD

Tel: (675) 323 1500
Fax: (675) 325 5206
Email:?? - no idea

Hope this helps..