Hi Harry, I'm running a taig mill with Mach3. I have an .XML file for taig and mach 3 that will set up the ports and pins for you. Shoot me a PM with your email address and I'll send it to you. I am just as new as you at this software but I have been using it with great success after some help from the guys here. The software is great and really works well once you get it set up and use it a bit.
Let me know if there is anything else you need help with to get you taig running, I'll try my best to help you out.
Doug