syncing install repos with latest updates

[Alastair Neil <ajneil gmail com>]

I just did an "install everything" installation of FC 3.  The "yum
update" that followed indicated 1085 updates actions to process,
meaning probably 543 packages to be updated.  Does anyone have a HOWTO
or script/tools for syncing the distribution with the latest updated
packages?  I recall redhat magazine distributed an updated set of CD
of FC1 but they are now defunct.  I don't care about creating iso
images for burning, I just would like to sync the RPM directories and
update the package list.