Want to find birth parent, a child you placed, or sibling?

[FONT="Georgia"]Hello. I just found out this afternoon actually that I have another Brother. I am now so curious I want to find this person. I have the Birth Fathers full name, Birth Mothers Last Name, Hospital & City of Birth, Year & Either Aug or Sept. How do I find this person? Even if I never approach my brother I still am more than curious to know as much as I can. Yet have NO clue even how to begin. [/FONT]