The nfs Mill package is a standalone program, not dependent on Mach4 in any way. It can connect to Mach4 and pass files, but its not needed. It was written using wxWidgets and in theory all we have to do is re-complie to get linux or Mac versions. The theory has not held up so good, but in time it will happen.
A turn wizard and a router wizard built on the same base is planned- I think Brian wants me to start on router next.