Thanks very much mitchell65.
Yes, Pro Show Gold will use video clips in the .mov format, but it has no provision for editing clips. The particular show that I am working on now is mostly photos and only a couple of clips so I decided to use Pro Show Gold. Initially I had not planned to use any clips, but I now have a couple that I want to use. Since I had the photos all set up on Pro Show Gold, I didn't want to start over with AVS Video Editor, although I know I can, and have, made shows with it using both clips and photos. If I had clips at the begionning, it would have been my choice.
Again, thanks.