I\'m running Windows 7 with PowerShell 2 installed.
I\'ve downloaded version 2.1 from here - http://pscx.codeplex.com/releases
The Release notes say
After spending lot of time searching here and there, i found this blog has very clear steps to solve. try it may helps u ..
http://blogs.technet.com/b/heyscriptingguy/archive/2011/07/18/install-the-pscx-and-80-new-cmdlets-to-ease-powershell-use.aspx