I too in the same situation as the stepfather wanting to adopt. The only difference is that the bio father has nothing to do with my kids, at all. I too want to adopt MY kids. I don't call them my stepkids, and they don't call me stepdad, because in my heart they are MINE and I am THEIR FATHER. What can I do to at least change my kids last names since I read that its easier to do that first. Hope to hear from someone soon with the answer. Thanks in advance.