http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.2/html/Virtualization/chap-Virtualization-Starting_xend_with_the_host.html seems to be mostly a repeat of the information at http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.2/html/Virtualization/chap-Virtualization-Managing_guests_with_xend.html
Fixed, removed Task_Booting _the_System.xml