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.