For users who want to move virtual machines from Virtual Server to Hyper-V there are two resources you should be aware of.

The first is the Virtual Server to Hyper-V Migration Guide that is now available here:  This explains the process for moving a virtual machine from Virtual server to Hyper-V and outlines all the catches and steps involved.  The second is the VMC to Hyper-V Import tool that has been developed by Matthijs and can be downloaded here:  This tool takes VMC files and creates Hyper-V virtual machines with the same configuration.