St, John,
Make sure you're downloading the correct xml as I believe there's quite a difference between xml's for the Taig 2000 and the Taig DSLS 3000 systems.
I'm not at all familiar with the 2000 system but it is not the same controller setup at all as the 3000 and with the 2000, I think you need some sort of "pulse- adapter" to run the 2000 with Mach 3. Don't quote me on that, but I'm remembering something to that effect

Dave