Last night I spent an hour downloading Acrobat 6.0. Then I realized that I hadn't been using Acrobat at all to read my PDFs. I had been using a Mac OS X program called Preview. Preview doesn't have those little binoculars in the tool bar. Acrobat 5.0 (and I assume 6.0) does. Problem solved.
Like the machine gun salesman in _The Friends of Eddie Coyle_ says, "This life is hard, but it's a lot harder if you're stupid."