But I do have another program available -- called "Preview" (for the jpgs) ;-)

I have also DefaultApp installed - I can "fix" it with that. In case a future reader wants to know more - see here: http://www.rubicode.com/Software/RCDefaultApp/

Thanks for the prompt reply BTW. I like Xee. One suggestion: make a preference that opens the window using the full screen (keeping the menu bar) and NOT changing window size to the picture - that's distracting to me. It would be as if during a movie the screensize of my TV would change randomly - makes it for me difficult to focus on the image itself.