Hood,
I ran the driver test from the demo version on the second computer. It ran with no problems. When I tried to move the table in Mach 3, there was no response. I even transfered my XML file. I loaded the demo Mach 3 onto the second computer and it loaded the parallel port driver as part of the installation. When I ran the demo Mach 3 using my XML file, the machine responded normally with axis movement homing. Somehow, I can't just load the parallel port driver without installing the demo. After I ran driver test, it did not seam to load the driver.

Hood,
I finally found out that if I installed the demo version in the same folder with my old version, it would find the license and install the full version including the port driver. I now have the second computer up and running with my mill. The only difference I have seen so far is when I rapid travel any axis, it starts quick and then slows down for about 1/4", then increases the speed until it is full rapid. What would cause the start movement to slow to almost pause  for a moment and then resume rapid? I tinkered with motor tuning, but that did not eliminate the start-slowdown-start continue movement. My old version did not do that. I am using my XML file from computer #1.

I wonder if you have backlash enabled with a very low speed or high shuttle accel setting?

Brett

Where do I check for backlash enable?

I found the problem. the Shuttle Accel setting is set to 1 second. When I change it to 0, the problem goes away.