I have wiki access but don't know if it's intentional that the "oVirt Node release" link still points to 3.3 (http://resources.ovirt.org/releases/3.3/iso/)

http://www.ovirt.org/Quick_Start_Guide#Install_Hosts

Download oVirt Node installation CD

Download the latest version of ovirt Node from oVirt Node release and burn the ISO image onto a disc.

Kind regards,

Jorick Astrego
Netbulae B.V.