Have a look at this 11 minute Video on Busting the top ten myths about VMware virtualization from Microsoft

http://www.microsoft.com/video/en/us/details/f8c3314f-c82d-4f8d-8b19-6a59733670f8?vp_evt=eref&vp_video=Microsoft+Mythbusters%3a+Top+10+VMware+Myths

Have you tried Hyper-V yet?