Hi Michael & Pete,

Both of those CAM programs appear to only be suitable for 3 axis milling.

One of the first things you'll need to establish is does your mill have 3 axis only or does it have a 4 axis(rotary)
If it has the 4 axis then you'll need a CAM program that can create cutting files accordingly.
Unfortunately the 4 axis CAM programs are much more costly!
In this case for a 4 axis version you're looking at $4000.00
http://www.mecsoft.com/Mec/Store/store.shtml

I already know that Pete wants to make jewellery items with his mill, so a 4 axis CAM program is really the only one that will allow you to make any ring designs properly.

Hope this helps, Colin