cd /usr/include
check if
asm -> /usr/src/linux/include/asm-i386
linux -> /usr/src/linux/include/linux
scsi -> /usr/src/linuz/include/scsi
cd /usr/src/linux
make mrproper - clean everything
make menuconfig|make xconfig
make dep
make clean
make zImage|bzImage
make modules
make modules_install
cp System.map /boot/System.map-$KERNELVERSION
cp arch/i386/boot/zImage|bzImage /boot/vmlinuz-$KERNELVERSION
reconfigure lilo.conf and rerun lilo