You need FDE for Windows. Don't know anyone who is selling that anymore.
This would require some sort of CAD-to-Path tool, and most of them cost money.
There is also the problem of MRC being an old controller and most software that can do this kind of task are probably not compatible with this generation of controller.
And, lastly, you would also need to use FDE for Windows to upload the produced jobs on MRC. Even bought second hand, it will also cost money.
That said, if you are planning make just 2D cuts (XY plane), there are some CAD-to-Path and/or DXF converters around Internet. If you have the time and skills, You can maybe adapt one of those solutions to your needs.
I have FDE and the physical "key", I just cant seem to be able to run the software on a newer pc. I have to get an old pc I think...