How can I find birth records for people born in Greece.

Birth records are called "Liksiarxikh Praksh Gennhshs" in Greek. They exist in every municipality in Greece. Since they are not online [they are literally hand written in a large book], you have two options of getting access to them:

a) Physically going to the municipality in Greece where you are looking for the records
b) Contacting your closest Greek Consulate, which can then contact the municipality and get the record for you

Note that, due to privacy laws in Greece, you cannot just ask for any birth record you want - you have to reasonably prove to the Greek Authorities that you have reason to have this information [i.e. that you are a blood relative]

The key thing is to know which municipality you are looking for the records.

Good luck.

Thanks for your advice. Will try that. How do I prove he is my blood thou when I do not even know him.pliz help.