I am the author of DANCAD3D.EXE v3.7N and the CNC/CAM programs that go with it. You can search google groups for keywords DAN HUDGINS, DANCAM, DANPLOT, DANCAD3D and some times with hyphens. There has also been some posts from users on Yahoo groups.
Current information about the revised versions of my programs v3.7 etc, are at my website,
http://www.DANCAD3D.com
There may be old out of date versions of my programs floating around I do not recomend using them, the most revised versions are at my site. If you have questions you can read the support section at my web site for contact information. These programs have been developed over more than 20years and I thank the many people who have help test them so far...