Hey both, massive thanks for the input. Spent the last hour & half trying to find where the problem was and found one dodgy wire. And I've now got it working :)) I'll be able to sleep happy tonight (got carried away and the time is getting on here.) Not tried much because of the time (I don't want to cause much noise), but I've just tried the DSP in manual and the x, y axis move. Not tried the z. I'll give it a better test in manual in the morning, then I've just got to learn how to set things up and operate correctly. That's where my nightmare begins ;)

I'll still probably work on building another controller box, etc. And maybe buy a few other better parts. Found a controller at planet-cnc that looks interesting - although I'm not sure how good it is. Anyway, massive thanks. If I run into more problems, I'll be sure to ask.

Cheers.