I have a seven year old son, and there is no father on his birth certificate. His biological father died when I was 4 months pregnant with him and he has never had anything to do with that side of the family because they are not the kind of people to have a child around. I have been with my husband now since my son was 4 months old and my husband wants to be on my sons birth certificate to show that he is my sons father and wants my son to have his last name... he says that in his heart and soul he is the father of my son.. my son constantly asks why his last name is not the same, he thinks that his father doesn't love him... so to ease both of them, we have decided to do it, but don't know what to do - - - any suggestions?