There are two ways to run CommView as a hidden process:
1.
Launch CommView with the "hidden" switch, i.e.:
CV.EXE hidden
2.
If CommView is already running, you can hide/unhide it by using the "hot key". To hide the application, press ALT+SHIFT+h. To unhide the application, press ALT+SHIFT+u.
Remember that you cannot completely hide any Windows application. When running in invisible mode, one can still see the CommView process in Task Manager.