I am upgrading from vanilla Zoot to 2.2.16-3 (or trying to)
One step I am told to do in the HOWTO is update mkinitrd and friends.
It fails for reasons that are mysterious to me.

This is my current version
# rpm -q mkinitrd
mkinitrd-2.4.1-2

This is what happens when I try to upgrade.
# rpm -Uvh mkinitrd-2.4.3-1.i386.rpm 
only packages with major numbers <= 3 are supported by this version of RPM
error: mkinitrd-2.4.3-1.i386.rpm cannot be installed

This also happens with SysVinit-2.78-8, initscripts-5.17-1.
PLEASE EXPLAIN!

If this is just a usage problem, then please update
http://www.redhat.com/support/docs/howto/kernel-upgrade/kernel-upgrade-3.html

The rpms appear to be ok, e.g.:
# which rpm
/bin/rpm 
# rpm --version
RPM version 3.0.4
# rpm -K --nopgp mkinitrd-2.4.3-1.i386.rpm
mkinitrd-2.4.3-1.i386.rpm: md5 OK
# rpm -K mkinitrd-2.4.3-1.i386.rpm
mkinitrd-2.4.3-1.i386.rpm: md5 OK
# rpm --checksig mkinitrd-2.4.3-1.i386.rpm
mkinitrd-2.4.3-1.i386.rpm: md5 OK

In case it matters, the rpms were downloaded from
ftp://ftp.mirror.aarnet.edu.au/pub/redhat/updates/6.2

#uname -a
Linux lorelei 2.2.14-5.0 #1 Tue Mar 7 21:07:39 EST 2000 i686 unknown