=====Version 1=====
Removes Users group from powershell(_ise).exe as there is no GPO or other setting to prevent the usage of PowerShell like there is for the command prompt (cmd.exe).

Tested and used on Windows Server 2008 R2 Remote Desktop Session Host (aka Terminal Server).

<code vb>
'TSSetPowerShellExeRights.vbs
'Remove Execute rights for Users on PowerShell.
'Meant to be used as a computer startup script
'20111115, v1

On Error Resume Next

Const HideWindow = 0
Const WaitOnReturn = True

Set objFso = CreateObject("Scripting.FileSystemObject")
Set objShell = CreateObject("WScript.Shell")

strTakeOwn = objShell.ExpandEnvironmentStrings("%SystemRoot%") & "\system32\takeown.exe"
stricacls = objShell.ExpandEnvironmentStrings("%SystemRoot%") & "\system32\icacls.exe"

Function SetExeRights(strExe)

	If objFso.FileExists(strExe) Then

		'Take ownership.
		objShell.Run chr(34) & strTakeOwn & chr(34) & " /F " & chr(34) & strExe & chr(34), HideWindow, WaitOnReturn

		'Remove the Users group.
		objShell.Run chr(34) & stricacls & chr(34) & " " & chr(34) & strExe & chr(34) & " /remove Users", HideWindow, WaitOnReturn

	End If

End Function

SetExeRights objShell.ExpandEnvironmentStrings("%SystemRoot%") & "\system32\WindowsPowerShell\v1.0\powershell.exe"
SetExeRights objShell.ExpandEnvironmentStrings("%SystemRoot%") & "\system32\WindowsPowerShell\v1.0\powershell_ise.exe"
SetExeRights objShell.ExpandEnvironmentStrings("%SystemRoot%") & "\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"
SetExeRights objShell.ExpandEnvironmentStrings("%SystemRoot%") & "\SysWOW64\WindowsPowerShell\v1.0\powershell_ise.exe"

'Cleanup
Set objShell = Nothing
Set objFso = Nothing

</code>