I installed Red Hat 7 from CD, now I want to upgrade over the internet
but I don't know the RPM command to upgrade over the internet.

I tried:
>rpm --upgrade http://ftp.redhat.com/pub/redhat/lin.../os/i386/SRPMS
But that errors with "error: /var/tmp/rpm-xfer.W3HkPD does not appear
to be a RPM package"

Can someone tell me how to upgrade from RH7 to RH9?

Thanks

-Allen