Ray,
Not much out there for turning. Mach provided,there is the LazyCam Lathe module which I don't recommend and it was replaced with LazyTurn which is free but is rather limited to for doing a profle. Then you have all the wizards and NFS has a lathe turning module you can try but must purchase a license and it is still not at a high level. Then there are number of low level softwares out there, some free and some inexpensive, but most are not worth the effort
Then you can start looking at stand alone commercial software and will find the prices very high.
I also use Dolphin and like it and would recommmend it also.
RICH