Looking for Zdzisław Kowal

Hi,

My mum is looking for her brother and my uncle Zdzisław Kowal.
We live in Melbourne Australia and have lost contact with him several years ago through moving.
We left Poland in 1992.
He is the son of Eugeniusz and Aniela Kowal
He is around 60 years old and is probably living in Warszawa and has a son named Sebastian.
If anyone knows of this person can you please contact me.
Would be much appreciated.

Thankyou.

There are so many Kowal's in Warsaw - the internet phone book doesn't list them all. A street name would be useful or an area of Warsaw Any other information your mum may remember may help.