紧急求助：如何实现windows2003系统上面注销某一个用户和创建新用户啊？

private static void DoExitWin(int DoFlag)

{

bool ok;

TokPriv1Luid tp;

IntPtr hproc = GetCurrentProcess();

IntPtr htok = IntPtr.Zero;

ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES, ref htok);

tp.Count = 1;

tp.Luid = 0;

tp.Attr = SE_PRIVILEGE_ENABLED;

ok = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref tp.Luid);

ok = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);

ok = ExitWindowsEx(DoFlag, 0);

}

public static void Reboot()//重启

{

DoExitWin(EWX_REBOOT);

}

public static void PowerOff()//关机

{

DoExitWin(EWX_POWEROFF);

}

public static void LogoOff()

{

DoExitWin(EWX_LOGOFF);

}

private void button2_Click(object sender, EventArgs e)

{

LogoOff();