IOCTLs in a windows Service

Ok, so I've built a driver that works completely. I have a win32 CLR CPP control application that is able to communicate with the driver and now trying to get the communication between my CPP windows service and the driver. Naturally I included the path to the common IOCTL.h file that defines my IOCTLs. Immediately I get bombarded with unknowns for METHOD_BUFFERED, etc. So I looked around and saw suggestions to use #include <winioctl.h> which defines all of that fun stuff. Unfortunately now I'm being bombarded with unknown data types such as DWORD, BOOLEAN, etc that are normally common place, with which I had no issues for the control application (didn't even have to add the winioctl.h.

So what is the great secret for doing this in a windows C++ service template?

here are my includes:
#include <stdio.h>
#include <stdlib.h>
#include <winioctl.h>
#include "..\..\SYS\ioctlcmd.h"
#include "windows.h"

and usings:
using namespace System;
using namespace System::Collections;
using namespace System::ServiceProcess;
using namespace System::ComponentModel;
using namespace Microsoft::Win32;

Help?!