How to set up Xen DomU as Windows 2008 Server on a CentOS Dom0 machine?
Start using the normal way that you usually do when you install a HVM domU, whether it's
virt-manager/virt-install or using manually-created config file. One additional thing to note is that for
64bit HVM domUs you need to make sure that acpi, apic, and pae is set to 1 on domU config file.
Once you get that Win2008 fully installed, you can install GPLPV driver later to improve performance.