Hey Jim;
Mach is great software and the support is unparalleled. There are videos on the support page which basiclly, show how to set up mach from scratch. I use mach3, the release version. You should be able to setup your small milling operation by just by following the video instructions.
Hope this helps. If more help is needed, just post here with specific questions and take your setup one step at a time!
Bill
