Hello World,
I had to replace the PC that Mach3 was running on, used a clean install of XP Pro and optimized it's settings.  Downloaded the Mach3 program, installed it, did the reboot!  I brought over a complete profile from the previous machine, all looks well, same settings, G code, Macros, just as you'd hope for.  Only problem, the diagnostic page shows absolutely no pin activity on port 1 and there is no axis movement, checked the port address back and forth between Device Manager and Ports and Pins, everything is in sync there.
Any thoughts?  Where to begin?
Thanks for the help!

i had a ibm netvista that acted like that. never could get the onboard port to work. ended up intalling 2 pci parallel ports.

Thanks Trip, I may end up going that way too.  Another clue, Mach will reset even when the printer cable is not connected.