The following support options are available:
Guides - Installing Xen for RedHat Enterprise Linux 6, CentOS 6, and Scientifix Linux 6
Mailing List - details on the support mailing list for Xen Packages.
IRC - Server and channel details for the ##xen support channel.
Onsite Support - Onsite support options by the maintainer of these packages.
Remote Support - Remote support options by the maintainer of these packages.