Highrez

Thank you to everyone for helping.
I am now able to build the driver (.sys) file.

You need
Win 7 x64 VM
VS 2010 installed
DDK Toolkit
WDK Toolkit

Select from toolkit Build Environment, Windows 7 , x86 or x64 Checked Build Environment
At the command prompt, change the directory where your .c and .h source is and run build -c

That seems to work for me.

That "driver blocked from loading" error is a classic. You definitely need to run your app as administrator. Right-click the .exe and choose "Run as administrator." Windows is super picky about driver access these days. Also, double-check that the InpOut32.dll and the .sys driver file are in the same directory as your app.

Where and how do you specify if you want to build DEBUG or RELEASE
I am looking at both the provided MAKEFILE and sources...

Thank you

Contents of the MAKEFILE
!INCLUDE $(NTMAKEENV)\makefile.def

Contents of the Sources
TARGETNAME=hwinterface # your program name (it'll compile to "hello.exe")
TARGETPATH=obj
TARGETTYPE=DRIVER
INCLUDES = %BUILD%\inc
LIBS = %BUILD%\lib
SOURCES=hwinterfacedrv.c # the name of the source file