To run your machine. The last 5 years have seen a transition to Mach3 for Taig users; you should try it. It's a relatively inexpensive CNC control program that runs in Windows, and it has a "LazyCAM" module that's capable of turning your linear DXF outlines into toolpaths that the mill can execute. You'll need a desktop computer that runs a relatively modern version of Windows (2000 or better) with a parallel port, set to EPP mode in Bios.
You can download it from ArtSoft USA - Home of Mach3 and LazyCam. Find a Taig XML file on the web (here's one, but I haven't tried it myself: http://www.micro-machine-shop.com/Mach3Mill.xml ) load it into the Mach3 folder, and navigate to that profile when you open the program. It will set up the program to (hopefully) run the mill correctly. Once you've confirmed that everything works correctly, pay the Mach folks their $160 or whatever and get a license file, which will override the 500 instructions limit of the demo program.
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