Hi,
to answer the question about updating.
If you download a new build of Mach4 then you'll also get a new copy of wx4.set, wx6.set etc and all the standard screen sets. If you have an existing
copy of lets say wx4.set and you have been adding and editing bits of it then it will get overwritten and all your edits will be lost.
What you need to do is your current screen set, whatever it is called, you need rename it to give it a unique mane. Then when you update to a later build it will be left
alone, and you can carry on using the same scree set but in a later build.
Craig