Thank you for your reply TotalTec. I could not get your solutions to work, but I thank you for your suggestion. I learned a couple of things in trying to implement it and your suggestion did lead me to a solution.
I think I found a way around it.
I created a separate page on my server with just the PHP in it. (guitarists-bday.php) Then in the empty X-Cart page, I referenced that page in an iframe tag.
<p><iframe src="/guitarists-bday.php" width="500" height="500" frameborder="0" scrolling="no"> </iframe></p>
It's not elegant but it works.
Thanks again.
Nick Paonessa