Adopted from Korea, looking for any family. Family name is Jo

I was born Oct. 10, 1966. Or atleast that is what the papers say. I was adopted in 1967. I am looking for my birth parents and any brothers or sisters. I was adopted from Seoul, South Korea. My parents are listed as unknown. Supposedly I was left on a GI's doorstep. I was adopted from Holt Adoption Agency. My actually name is Jo, Young-Ja. The family name Jo comes from Han Yang. I have a copy of my adoption release but that is it. Jo, Young-Ja Jodi Moore Kjade36@aol.com or JodiMoore36@yahoo.com