Howdy Ron,
Sorry for the tardy response here. I did try out your two files (txt and .not) and was able to successfully paste the lyrics into the .not file. I suspect you'll need to split some of the words and add some melismas (dashed lines) to get it all to line up properly on the notes, but it's pretty easy to do that after getting them into the file.
I should have pointed you to the video we have for adding lyrics - you can find it in the "Tour" section of our website at
http://www.notation.com/DemoFrame02AddEditLyrics.htm The first part deals with typing in lyrics, but about 1/3 of the way through, it addresses adding lyrics from a .txt file, and then shifting lyrics if needed to match them up with the proper notes.
Let me know how it goes!
ttfn,
Sherry