I know how hard it can be (I have been searching for 14 years for my biological father) I search off and on. The best advice I can give you is have a open mind- you never know the outcome. Every time I think I am close then find out I am NOT, I always remember "when it is ment to be it will happen" I wish you the best of luck in finding your father. It can be a long and difficult task. "everything happnes for a reason" I found out by "accident" when I was 21 that my dad was not biological. I have had a lot of emotions with it. Just remember to stay strong.