To recompile your kernel please ffollow these steps
cd /usr/src/linux
make xconfig <-----if you want the grphical interface to configure the new kernel behaviour
make menuconfig<----text interface
make dep
make bzImage
make modules
make modules_install
If you have a intel based paltform after the kernel is compiled go to:
cd /usr/src/linux/arch/i386/boot
cp -p bzImage /boot/mynewkernel
cd /boot
before creating your image file go to:
/lib/modules
and check the directory you have there is ually something like 2.xx.yy
where xx and yy is the kernel version you are compiling.
mkinitrd 2.xx.yy initrd.img
now you should add the kernel and the image files to either lilo or gurb
lyx0m