Change Windows 7 Login Disclaimer (Legal Notice)

/*
 * This code needs to be run via the admin account
 * because it does registry read/write operations.
 *
 * Original Code: http://pastebin.com/u/H4x0
 */

using Microsoft.Win32;
using System;
using System.Threading.Tasks;

namespace WinLoginMessage
{
    class LoginMessageHelper
    {
        const String REG_PATH =
            @"SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System";

        public class LoginMessage
        {
            String ITitle = String.Empty;
            String IMessa = String.Empty;

            public String Title
            {
                get
                {
                    return ITitle;
                }

                set
                {
                    ITitle = value;
                }
            }

            public String Text
            {
                get
                {
                    return IMessa;
                }

                set
                {
                    IMessa = value;
                }
            }

            public LoginMessage(String Caption, String Message)
            {
                ITitle = Caption;
                IMessa = Message;
            }
        }

        public LoginMessageHelper() { }

        public LoginMessage Load()
        {
            LoginMessage ReturnValue = null;

            Task RegTask = Task.Factory.StartNew(() =>
            {
                RegistryKey REG_KEY = Registry.LocalMachine.OpenSubKey(REG_PATH, false);

                ReturnValue = new LoginMessage(
                    (String)REG_KEY.GetValue("legalnoticecaption", ""),
                    (String)REG_KEY.GetValue("legalnoticetext", "")
                );
            });

            RegTask.Wait();
            return ReturnValue;
        }

        public void Save(LoginMessage Msg)
        {
            Task RegTask = Task.Factory.StartNew(() =>
            {
                String N_TIT = Msg.Title;
                String N_MSG = Msg.Text;

                RegistryKey REG_KEY = Registry.LocalMachine.OpenSubKey(REG_PATH, true);
                REG_KEY.SetValue("legalnoticecaption", N_TIT, RegistryValueKind.String);
                REG_KEY.SetValue("legalnoticetext", N_MSG, RegistryValueKind.String);

                /*
                 * Check to make sure the values were saved
                 */
                LoginMessage O_Object = Load();
                String O_TIT = O_Object.Title;
                String O_MSG = O_Object.Text;

                if ((O_Object.Title != Msg.Title) || (O_Object.Text != Msg.Text))
                {
                    throw new Exception("Values not saved correctly.");
                }
            });

            RegTask.Wait();
        }
    }
}