DS开发出来的USB驱动请教~~~

《10分钟开发一个USB驱动》里面做出来的TEST.exe，可以用来打开USB的一个灯吗？里面有这样的程序：
NTSTATUS TESTDevice::TEST_IOCTL_LED_Handler(KIrp I)
{
NTSTATUS status = STATUS_INVALID_PARAMETER;

t << \"Entering TESTDevice::TEST_IOCTL_LED_Handler, \" << I << EOL;

__try
{
// TODO: Verify that the input parameters are correct
// If not, return STATUS_INVALID_PARAMETER
if(I.IoctlOutputBufferSize() || !I.IoctlBuffer() ||
(I.IoctlInputBufferSize() != sizeof(UCHAR)))
__leave;
// TODO: Handle the the ZBUARD_IOCTL_LED_ON request, or
// defer the processing of the IRP (i.e. by queuing) and set
// status to STATUS_PENDING.
PURB pUrb = m_Lower.BuildVendorRequest(
NULL, // transfer buffer
0, // transfer buffer size
0, // request reserved bits
(UCHAR)(*(PUCHAR)I.IoctlBuffer()), // request. 1 = LED_ON, 0 = LED_OFF
0 // Value
);

// transmit
status = m_Lower.SubmitUrb(pUrb, NULL, NULL, 5000L);
}
__finally
{
// TODO: Assuming that the request was handled here. Set I.Information
// to indicate how much data to copy back to the user.
I.Information() = 0;
I.Status() = status;
}

return status;
}
如何把里面的程序改一下可使USB设备的灯亮和灭，达到控制？
有人知道如何改吗？请教。

[编辑 -  6/8/03 by  Pcidler_Beny]

TODO要怎么改？
好心人教一教我吧，急啊~~~

DEBUG编译成功通过；FREE和RELEASE不能通过，错误为：“TESTDEVICE”为未定义的类。
如果我只要在电脑上实现控制设备的灯亮和灭就行，那我用DEBUG
编译出来的TEST.EXE要作修改吗？

[编辑 -  6/9/03 by  Pcidler_Beny]

[编辑 -  6/9/03 by  Pcidler_Beny]