Originally Posted by XenRocks
It's a bit opaque, I must admit. If you want to get something up immediately, download the xensource xen express cd and it contains a very handy install from vendor media option that will consume RHEL 5 CDs and do the right thing. Alternatively I think it can consume from a network repo.
I contacted Red Hat and learned that I have to go through RHN to subscribe to the Virtualization channel. Once that was completed, I had to install a group called Virtualization (yum groupinstall virtualization). This installed all the packages I needed to get Xen running.
Thanks for your comments.