I Need Help...

Hello...I need to know if anyone can tell me how to obtain any information, about my birth mother's resting place. I was adopted, at the age of two, after being in an orphanage in Thailand for the first two years of my life. I was told, that my mother died giving birth to me. I would like to find out, where I can get the information on the cemetary, she may be at. I was born, May 18, 1965 in Ubon, Thailand. I was also told, that my birth father, may still be alive...how could I find this out? I don't have alot of money for an attorney, or for alot of the websites on here, so any free advice would be much appreciated. :)