yes i already installed bind but when i want to configurate i don't find the file or the right file
Try this
cd /etc
ls -axl named.conf
if you do not see it or a symlink to where it really is, then do what the others suggested and try the find command or samples area
when you install bind and chroot bind stuff it would go here
cd /var/named
then
ls -axl
and look around chroot dir etc
- rh