Hi
finally, save your changes and run as root:
# grub-install /dev/hdX
where /dev/hdX is the name of the hard drive where you want grub to install. p.e. /dev/hda to install in the MBR of the first hard drive.
Regards, Miguel
GRUB does not require this step since it directly reads the configuration file at boot time unlike LILO
regards Rahul