Thanks for the replies chaps. I will stick with the DSP for now and try using that. If I really can't get on with it I will look into modifying the machine to run off Mach 3.

I was never hoping to run Mach 3 off a laptop, merely the DSP application. I am advised by the machine's previous owner however that I may not need to bother with the DSP application, just take the CAM output straight to the DSP controller with a USB stick. Does that sound about right? Are there any issues with the CAM file (deskproto) coming from a 64 bit laptop, if it is not going to Mach 3 but straight to the DSP pendant?

Chris