A bit late in the day to come on this one, but I hate to see a 0 on replies.What is is exactly you are thinking of.
Something to do with a six wire motor. I have just been wiring up a new drive, which is four wire, and the diagram shows a six wire motor wired to four wires, by ignoring the centre wire of each set. - so you can use what is now I think a standard four wire stepper driver. My 8 wire motors are wired in series to a four wire driver.
Now I read your post again, and have my brain switched on, I think this might be something to do with trying to drive an inverter for your spindle drive.
I cannot see where the small pic boards for hobbyists fit in, although I have done a fair bit with PIC chips