How to Download Windows PowerShell
Windows PowerShell 1.0 RTW currently supports Windows XP Service Pack 2, Windows Server 2003, Windows Vista and Windows Server 2008. Windows PowerShell can be downloaded from Microsoft’s Download Center for all operating systems except for Windows Server 2008 where it is available as an optional component on the installation disk or via Server Manager. The .NET Framework 2.0 is required in order to install Windows PowerShell. Remember to download the Windows PowerShell Documentation Pack that includes a Getting Started Guide, Quick Reference chart and a 100+ page Windows PowerShell primer.
Click here to download PowerShell.