The instructions in RHSA-2000:037-01 (2.2.16 kernel update) tell you:
4. Solution:
For each RPM for your particular architecture, run:
rpm -Fvh [filename]
where filename is the name of the RPM.
These instructions are incomplete and may result in a system that
is unbootable.
After updating the RPM files, you should also:
(1) run mkinitrd to create a new initial ramdisk image
[this step may not be necessary on some systems]
(2) update your lilo.conf file
(3) run /sbin/lilo
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