Thank you Jason! I have responded to the ticket session.
For now, I have just created a second LogIn page for the checkout redirect, since I could not get the "show region" text to show correctly. But now I have another problem. In uploading my files live, the registration page is not being redirected to either the LogIn.php page (successful) or the ExistingAcct.php page. It goes to error, "The webpage cannot be found" HTTP 404 Not Found", similar to your correspondence in thread showthread.php?t=20916&highlight=registration+page+live. I have checked the helper file, as was mentioned, and it looks correct. I have recreated the page, adding a username field and am still getting the same error. I am attaching my registration.php and the helper page file, just in case you would like to look at it before the ticket session.
Once again, thank you.