Powershell V2 for all windows versions available
Windows Management Framework, which includes Windows PowerShell 2.0, WinRM 2.0, and BITS 4.0, is officially released .
IT Professionals can now easily manage their Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2 machines through PowerShell remoting.
Click this link for the list of packages for each OS: Description of the Windows Management Framework on Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008
source : BSonPosh
up and running and using on a W2K8 (no R2) box …
//Bart