OK, got it done, now!
Here is what was NOT clear in the instructions...
I uninstalled the Chin Chip Drivers...then hooked up in USB mode.
AT THAT POINT...a device showed up on the Device Manager...
and under that
Jz4740 USB Boot Device (Rockbox USBtool)
THAT is the device to update the driver!!
You just have to update the driver with the unpacked files...and you are good to go.
Then you plug in in Rockbox mode, and open your command shell, and do your thing!
THIS was where I got confused, and the instructions were not very clear.
Thank you so much for your help, I now have Dingux installed on my Dingoo!!
P.S. by the way, I noticed it re-installed the China Chip drivers again, once I plugged back in normally, but that doesn't matter once it has been flashed with Dingux. You can access both the internal drive and the SD card as two different drive letters.