Genealogy / My last name... Dybczak [4]

hi, i'm half polish and my last name is Dybczak... anybody know what it means? or is there any website where you can see what all these polish names originally come from and what they mean?

just curious.. would be fun to know.

thx

oh and another question, where can i look for family with the same name?.. i tried google, is there like a main site where i can locate family around the world.. or just in the states..

thx