Yes indeed it turns out I do have Windows context menu items turned off.
And blow me down your context menu entry gives me precisely what I need!
Amazing! Stupendous!
Thank you Jon wonderful.....
I see there is an internal command FileType and the CONTEXTFORCE switch specifically overrides the Hide Windows items on file context menus option you have mentioned above.
For those who have the stomach here are the switches used in the command:
What exactly is a GUID?
Well I am reading here Tip: Organise and Speed-Up Context Menus to try and find out....
thanks again Jon appreciate it