\Registry
    MACHINE
        SOFTWARE
            Microsoft
                Windows
                    CurrentVersion
                        Controls Folder
                            Display
                                shellex
                                    PropertySheetHandlers
                                        OpenGL MCD CPL Extension
                                            = REG_SZ {49f1d180-8ead-11cf-83ac-00aa00c21db6}
                        Shell Extensions
                            Approved
                                {49f1d180-8ead-11cf-83ac-00aa00c21db6} = REG_SZ OpenGL MCD CPL Extension
            Classes
                CLSID
                    {49f1d180-8ead-11cf-83ac-00aa00c21db6}
                        = REG_SZ OpenGL MCD CPL Extension
                        InProcServer32
                            = REG_SZ mcdtab.dll
                            ThreadingModel = REG_SZ Apartment