So downloaded the plugin via the auto install route http://cncdrive.com/MC/UC100%20full%...UCx00setup.exe
Seemed to give a bit more functionality and I was able to change the keyboard functions (all I wanted were x+ z+ x- z-. on up down left right arrows ) but I got in a bit of a mess and decided to start afresh so uninstalled Mach4 and downloaded again.

Now wont install
Keeps coming up with "cant find ******************* " which you can ignore but then immmediately comes up with another "cant find, and another and another

Grrrrrrrrrrrrr!