Windows PowerShell 1.0 is Microsoft's next generation command line shell and scripting language which comes as part of Windows Vista. It's also available as a separate download for Windows XP Service Pack 2 and Windows Server 2003.
Windows PowerShell includes more than 130 standard command line tools, with a consistent syntax across all the utilities. To find out how to use PowerShell you can download the Documentation Pack. This documentation includes a 'Getting Started Guide', 'Quick Reference chart' and a 100+ page PowerShell primer.
Note: To install PowerShell, you will need to install the .NET Framework 2.0 on your local computer.