cd /usr/src/linux
make menuconfig
# Device drivers
#   Networking support
#       Networking options
#           <*> PF_KEY sockets
#           <*> IP: AH transformation
#           <*> IP: ESP transformation
#           <*> IP: IPComp transformation
#           <*> IPsec user configuration interface
make clean
make && make modules_install
emerge nvidia-kernel
#
mount /boot
cd /boot
cp -p kernel-2.6.12-gentoo-r10 kernel-2.6.12-gentoo-r10.old
cp -p System.map-2.6.12-gentoo-r10 System.map-2.6.12-gentoo-r10.old
cp -p config-2.6.12-gentoo-r10 config-2.6.12-gentoo-r10.old
#
cd /usr/src/linux
cp -p arch/i386/boot/bzImage /boot/kernel-2.6.12-gentoo-r10
cp -p System.map /boot/System.map-2.6.12-gentoo-r10
cp -p .config /boot/config-2.6.12-gentoo-r10
grub-install /dev/hda