The Heart of a Linux OS is the kernel. up2date and yum have been prodding me to upgrade, so I loaded in the new (2.4.22-1.2129) kernel and kernel source RPMS. I've had bad experiences with RedHat kernels before, like the updates not having PPP support. Didn't happen this time, of course I don't need PPP support at the moment.
Grub let's you boot from either kernel. That's a good thing.
One day I'll have to learn how to recompile the kernel. Not today, I want to get everything else running first.