It is possible to integrate the configuration and installation of Xen guest virtual machines (VM) quite closely with an existing QWG setup. Using [http://www.cs.tcd.ie/Stephen.Childs/pypxeboot pypxeboot] and suitable Xen packages (such as those available from CERN Linux support [https://twiki.cern.ch/twiki/bin/view/LinuxSupport/XenHowTo here], it is possible to perform a fully-automated install of Xen guest VMs, with all relevant configuration automatically extracted from the guest's own templates.