Microsoft have release Windows Server 2008 images

for both Hyper-V and Virtual Server.

链结如图示：

Each set of images come in two flavours, Full and Core. 

If you want to know more, go check out the Microsoft Website,

and a snippet is below:

VHD Images for Microsoft Virtual Server:

• WS08_RTM_x86_EnterpriseVHD.zip (single file)
• WS08_ServerCorex86_EnterpriseVHD.zip (single file)
• or download the multi-part image:  2008 VHD Images for VS2005

VHD Images for Microsoft Hyper-V:

• WS08_RTM_x64_EnterpriseFULL.zip
• ServerCorex64_Enterprise.zip 
• or download the multi-part image: 2008 VHD Images for Hyper-V

I’ll download a copy as soon as I can, and convert them to VMDK’s (using converter) and see how they run under ESX.

PS:  Mental note, I’ll also read the EULA too, and see if anything virtualization vendor specific pops up