1. First Download Power Shell
http://support.microsoft.com/kb/968929
2. Follow the instructions in the following website
http://www.ehow.com/how_5836904_install-windows-powershell.html
3. To launch PowerShell just click start run type "POWERSHELL"
Reference and Resources
http://technet.microsoft.com/en-us/scriptcenter/dd742419.aspx