Simon

Do you have a seperate 12v supply for your spindle board or did you buy the one with the 12v DC to DC converter?

The PWM boxes have nothing to do with your step/direction board so no need to enter anything there.

So long as you have set up the the correct pin numbers for the step and direction on the motor output tab there should be no need to enter anything to the same pin number for it to work.

Don't forget if you cannot get it to work you could have a faulty board.

Andy