Hey! No, it didn't work. Well, the "Start Reading" link appeared, but the file still initially opened on the last chapter. But I think this other method works okay (where I specify only one page as text in the guide). And I found some other documentation that seems to support this idea that it should only be one page anyway (as you had said, but which other sources had disagreed with):
http://idpf.org/epub/20/spec/OPF_2.0...htm#Section2.6
Thanks, Phyllis