Hi,
Sorry but I'm a newby. I have a cnc cutter for pvc. It runs on a UNO controller. currently I can only use easel and operate via USB port to the controller.
How do I move over to Mach3 or whatever if my laptop does not have a parrallel port and is there some instructions for dummies please?

Is your UNO running grbl?  Why do you want to move to Mach3?  You could stay in the grbl world but have a better system to drive grbl/UNO, but if you change to Mach you will need a different motion controller to replace UNO/grbl.  You can run usb motion controllers from Mach3 (which I do) or there are other and possibly better combinations.

So first, why do you want to change?

Hi,
Thank you for the quick response, I appreciate it. I am looking to get something better than doing my cnc cutting with easel. My Uno does run gbrl. Currently I am getting along with easel, but I was just wanting to find out if there is something better to use.
Thank you.

Well easel does cad/cam and CNC control. Mach 3/4 only do the control part.  What's wrong with easel you want to fix?