Thank you for your answers, greatly appreciated. The aid agency I will be working for know about the conviction, but have asked me to find out if I would be able to get a working visa in PNG as they have never dealt with something like this before, I am not sure if they use an agency or not, I will have to check. I am also interested in visiting PNG next year for a few weeks to meet the people and check out the country, I know that on the immigration card when you arrive at the airport they ask you if you have any criminal convictions. What would be the best way to arrange a visit in these circumstances?