Cheers for that.

I seem to be at a brick wall with the parallel port and motor speeds. The port will handle upto 35Khz, anymore and the PC starts to play up. This limits me to rapids of about 6m/min with 8x microstepping on the 5mm pitch screws. Its not really a big deal as the machine wouldn't handle cutting at those speeds anyway. Might have to consider a smoothstepper or perhaps lower the microstepping to 4x on the drivers. Is that's a good move or should I just be happy with what I've got?