>AFAIK you can only run any windows version in paravirtualized mode >only in vmware server, not in Xen or KVM which are the virtualization >technologies CentOS supports. No. Vmware is no different than Xen or any other in this respect, they also don't have access to the source and therefore cannot provide a modified version of the OS. There was a University project ages ago for Xen that was done under NDA but obviously was only POC and never released. http://www.vmware.com/files/pdf/VMware_paravirtualization.pdf jlc