I'm using a PC running windows 7, 32 bit,parallel port, the DRO's change on the mach3 screen, but the motors don't run (the axis's do not move), I have read the manual more than 3 or 4 time, and cannot find the problem. I have been in touch the the manufacturer of the control box, and performed the test as he prescribed, and it checks out to be good, as far as we can determine. the device manager in windows says the parallel port is performing properly, and the driver test is excellent.