I am married with a girl that lives in Finland and i am here in Nigeria but we are both married in Nigeria,after she went back to her own country Finland and wanted to Legalized the certificate there in the maistraatti of Finland but she was told that they have to stamp the certificate first and it has to be done in Ministry Of Foreign Affair at Abuja but i don't really know what and what they need from me when i am going there... Please can some one tell me what to do because i don't want to do anything wrong or waste time to go there and they ask me some certificate to give or proves....

Please can someone tell me how can i Legalized my marriage certificate and what and what do i need to give to the ministry of foreign affair?