Installing Updates on RHEL 3 & 4

Is there another way to install updates on RHEL besides using the up2date utility?

I have some systems that are not accessible to the internet.

So, when I look for the updates that are supposed to be for my system, i dont even know where to go to download them? it just keeps bringing me to the documentation for the packages...

Any help would be appreciated.

There are several ways. look at /etc/sysconfig/rhn/sources for some ideas...myself, I prefer to set up my own "up2date " server so I can download once, then dish out to all other servers on the network..if you want info on how then I'll I'll post