Hello,
I was quick to post when I was having a problem, so I should be just as quick when a solution was found. If you are having the same problem as of this date - March 4 - here are some things to keep in mind:
1) I went to the introductory training too early. It can take as many as 5 days before the Round Corners template appears, because Marketo has to do some work on it to make it feel like it is your own.
2) If you are really familiar with HTML and have used other systems, you may be able to download the HTML code and create your own missing template if you can't wait for the provisioning.
3) There is a disconnect between the training module and the live site - but that is being fixed. We all know that websites and training modules are fluid. Keeping them in sync can be a challenge.
Thanks to everyone who gave me a hand to solve the problem.
Prisca