hey jatin thnks a lot yaar i got solution prb is solved, now i came to know that i had to activate "render channels output".
ok by the way just tell me one more thing that in render manager>current pass tab> two option "manager" and "render pass", so under render pass there r two option CURRENT, SELECTED, ALL and now my prob. is
which option i should click for final render command? and i have a tut. but it belongs to 5 version and from 5-6.5 version so many things hav been changed so i cldnt get that which option i should click for final render command.
so can give me guidance or any link of tutorials of new version from where i can clear my doubt? no prob wid rapid or torrent link.