[libvirt] how to Create virtual machine

Hi, I am working on a virtualization project that involves setting up virtual appliances to implement the same, which tool is required to 1) create virtual appliances 2) deploy virtual appliances 3) manage virtual appliances/virtual machines Could you please guide me with some pointers or resources to get started with the creation of virtual machines? I am little confused with libvirt with Xen and qemu. how does xen or qemu related with libvirt ? Thank you. Saravanan Sundaramoorthy Red Hat Certified Engineer http://www.google.com/profiles/dearsaravanan#about +91 99404 32545