I asked the same question and someone sent me this link
www.tormach.com/store/index.php?app=ecom&ns=prodshow&ref=38249
I haven't gotten around to buying it yet. I was told it can be run from a parallel port but will run better on a Mesa card. I was also told I can do a clean install from the USB they send since I don't have it installed on my machine It is sold as an upgrade from v1.9.13.Hope this helps.If you have more questions feel free to ask.
