My team has a fairly significant dependency on virtual machines, and we're currently looking to add Hyper-V support in addition to our current solution using Virtual Server 2005 (value adds mainly being x64 and multi-core VMs). The majority of our team members, however, are still running on Windows Server 2003 or Windows XP, and might not be in the mood to upgrade to Windows Server 2008 x64.
As such, I'm trying to find how we can provide a pool of Hyper-V machines that are easily available for these users. For Windows Vista, Server 2008, and Win7, I've found tools for remote Hyper-V role management, which allows the remote user to use the VMC tool locally for a remote VM host. I haven't been able to find anything for older versions of Windows; is there a RSAT tool (or similar) for downlevel Windows OSs to interact with newer versions?