Powershell won't add snapin

Hello Community

    I have installed window 2008 Enterprise Server on a Hp8100 I7 computer
(I realize it is not an actual server).

    Now I want to use Powershell 2.0

    I have added Powershell thru Server Manager but when I try to run
Add-PSSnapin Microsoft.SharePoint.Powershell, I get a message stating:

    "Add-PSSnapin : No snap-ins have been registered for Windows Powershell version 2."

    Since I got that message I have uninstalled and reinstalled but
no matter what I do I get the same error message.

    The other ways that I have tried to install Powershell have been by
downloading the different Microsoft Frameworks 3.5 sp1, 4.0 and 4.5 installers
but when I run the associated Kb files kb960568, kb968389, kb968930, kb2506146, kb..288,
etc, etc. I get the same error message stating:

    "This update does not apply to your system"

    The goal here is to install "Microsoft.SharePoint.Powershell".
 
    Note: Get-PSSnapin returns the following:

        Microsoft.PowerShell.Core = components of PowerShell.
        Microsoft.PowerShell.Host = Start-Transcript, Stop-Transcript etc, managing PowerShell console host.
        Microsoft.PowerShell.Management = management cmdlets used to manage Windows components.
        Microsoft.PowerShell.Security = cmdlets to manage Windows PowerShell security.
        Microsoft.PowerShell.Utility = utility Cmdlets used to manipulate data.

        Microsoft.PowerShell.Diagnostics = Eventing and Performance Counter cmdlets.
        Microsoft.WSMan.Management = Get-WSManInstance, Set-WSManInstance etc for WSMan operations.

    Where am I going wrong?

    Thank you
    Shabeaut