I can understand that this is a frustrating situation. I would suggest that you really do need to get an attorney to help you with this. First, your rights would have to have been terminated for them to be adopted and you would have had to have notice of that. I am assuming that you have no visitation with them at this point or for the past few years. Really, an attorney is the best one to help you get to the bottom of this. You can locate one through the attorney locator on Lawinfo's home page at
http://www.lawinfo.com/. Some do offer free consultations.