Ralph Angenendt wrote:
Do not install "Virtualization" and you won't have xen. There are no different ISOs for "with xen" and "without xen".
This means that the OP did not even bother checking the responses to his question.
http://lists.centos.org/pipermail/centos/2008-November/068124.html
even looking at the recent kernel updates one can see for themselves :-
x86_64: kernel-2.6.18-92.1.17.el5.x86_64.rpm kernel-debug-2.6.18-92.1.17.el5.x86_64.rpm kernel-debug-devel-2.6.18-92.1.17.el5.x86_64.rpm kernel-devel-2.6.18-92.1.17.el5.x86_64.rpm kernel-doc-2.6.18-92.1.17.el5.noarch.rpm kernel-headers-2.6.18-92.1.17.el5.x86_64.rpm kernel-xen-2.6.18-92.1.17.el5.x86_64.rpm kernel-xen-devel-2.6.18-92.1.17.el5.x86_64.rpm
Regards, Vandaman.