strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
    & "{impersonationLevel=impersonate}!\\" _
    & strComputer & "\root\cimv2")
Set colOperatingSystems = objWMIService.ExecQuery _
    ("Select * from Win32_OperatingSystem")
For Each objOperatingSystem in colOperatingSystems
    Wscript.Echo "The operating system installed on this computer is" & vbNewline & objOperatingSystem.Caption & _
    "  " & objOperatingSystem.Version
Next