The Power supply is dual voltage so you won't have a problem in that area, You do want to have a computer to there required spec's or close to it though
If you have problems with Mach3 then you may have problems with anything you try Mach3 I think is one of the easiest controls to setup and run, there are a lot of bells and whistles but you only need the basic's to get it running
For a Lathe Acorn it very good as it has a simple Encoder setup for threading as Mach3 can be more of a challenge in that area and you would loose any hair that you have left most likely to get that part running