[libvirt] kvm-qemu emulator problem

Hi all , I am trying to use fvd for my guest machine for that I refer the link http://sites.google.com/site/tangchq/qemu-fvd now all works fine except the last step which said that if libvirt is used then the xml configuration file need to be changed to include the modified emulator qemu-system-x86_64 The default path is /usr/libexec/qemu-kvm But the change in xml configuration file is of no use which is in /etc/libvirt/qemu directory. Since it is created when the guest is created using virt-install. Well I don't know how I can change the default path for emulator, so that qemu-system-x86_64 act as a default emulator can anyone help ? DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NECHCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NECHCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . -----------------------------------------------------------------------------------------------------------------------