Private South African Adoption

I am an ex-South African married to an American and living in America. I am not an American citizen yet. Being South African I'd love to adopt a South African child. I realize that South Africa has passed the Child Act and so will only allow inter-country adoptions with countries that are participants with the Hague Convention. However, has anyone adopted via private adoption in South Africa? If so, how did you find the birth-mother? Did you use an agency or attorney in South Africa? Are there any other suggestions or information we should know about? Thanks!