Open C2 files

I would like to open my .C2 files the same way as MS Word or Excel: By clicking on the file name with .doc or .xls extensions. But I am not able to do that with my .c2 files. CAESAR II always starts up with the last file I have worked. Is there any way we can modify the default file open mode?

The installation routine was changed for the 060301 build, and the "c2" suffix should be registered with Windows. If not, "right-click" a "C2" file, select "Open", browse for \caesar\c2.exe, and check the CheckBox for "always use the selected program".