find that file

find -name /lib/modules/ -name whatever.ko

Make the required directories, and
position it for each new kernel:
                /lib/modules/2.6.whatever/updates/whatever.ko

It also has to be in teh same relative place for the RUNNING kernel, for the
next step to work

run: depmod

run: modprobe whatever.ko

run: mkinitrd

this makes a clean initrd

edit: /boot/grub/grub.conf


==========

very preliminary