CHADoes the Cross-Hole Analyzer (CHA) program run on Windows Vista (or Windows 7)?
Yes, but it is recommended that you make sure that the program is properly registered. In order to do that, find the file CHA.exe, right click on it, then choose Run as Administrator and confirm the operation. Once the program opens it is already registered. You can then close the program, and after that it can be opened normally from the desktop icon.