PowerShell V2 now Available on Older Operating Systems

Now you can safely forget V1 and switch to the vastly superior V2. As of last week it is now available on -

Windows Server 2008 with Service Pack 2

Windows Server 2003 with Service Pack 2

Windows Vista with Service Pack 2

Windows Vista with Service Pack 1

Windows XP with Service Pack 3

In Windows 7 and WS08 R2 it is part of the package.

PS2 is part of Windows Management Framework which also includes WinRM and BITS4.

BTW: You need to install PowerShell 2 on server core. Read how in KB 976736.