Thanks for the suggestions, but I'm not quite sure that will work. Granted I'm not very familiar with the EZPage function, but I'd really like to make it as seamless as possible by keeping it to one page.
I want to have all the articles stored at www.mysite.com/articles with each file name being like article001.php, article002.php, etc. For example:

www.mysite.com/index.php?main_page=articles

Articles

Random text here to outline the purposes, etc.

Drop down menu with list of all articles (article 1, article 2, etc.)

***Article content changes based on drop down menu***

Back button

I found a way to make it work with iframes, but I wasn't able to auto-adjust the height of the iframe to conform with the article, so I had to veto that idea, unless anyone else has some suggestions.

Any other ideas?