where saves facetime the contacts in the snow Leopard operating system?

Where does facetime save the contacts in the snow leopard operating system?

I need the filepath.

THX

Because: I made a timemachine backup on the snow leopard system and then i've deleated all data from my mac (reason I had too much programs installed and therefore it was very slow). Now I want only my facetime contacts back. Can someone please help?! ⚠