I'm sure the answer is simple, but I'm not seeing it

My initial issue was that when installing and testing the ioncube loaders on my Earthlink hosted site, I was being told that my version of PHP needed to be upgraded because the necessary loader file was no longer supported.
Turns out that my server, however, supports both PHP4 (version 4.1.2) and PHP5 (version 5.0.5). With that, I have reinstalled the ioncube loaders. My problem now is that the "default" appears to be PHP4.
If I run the loader test without modification (http://www.jaymoinc.com/jaymos-test-site/ioncube-loader-helper.php), the script attempts to load PHP4 and I get the original error. However, if I modify the name of the test file with the extension *.PHP5 (http://www.jaymoinc.com/jaymos-test-site/ioncube-loader-helper.php5), I get a successful load.
So now that I know that the ioncube loaders should work successfully on my server, how or where do I need to make modifications to ensure that the proper version of PHP is triggered for the EZAWB scripts?
Any guidance or insight would be greatly appreciated.
Turns out that the solution was simple as expected. The following is a log of my exchange with the folks at Earthlink which details the work-around. Unfortunately for me, my "starter site" doesn't support multiple domains so I've gone ahead and "invested in the new tool (Hostgator)".
I hope that someone else will benefit from this information...and don't hesitate to message me if you feel that I can be of assistance.
admin@jaymoinc.com: I understand from previous chats that PHP versions 4 and 5 are both available on my starter site, however, it appears to default to php4. How do I trigger php 5?Christopher: You will need to use .php5 for your file extensions.
Christopher: Using .php4 will only parse commands that are available on version 4 only.admin@jaymoinc.com: okChristopher: Do you have any further clarications on this?admin@jaymoinc.com: sorry for the delay
admin@jaymoinc.com: Are there any other options that you are aware of?Christopher: Well, if you prefer using .php as your file extension or if you have a number of php files with the .php extension already on your webspace, you can add the following code to make our PHP 5 interpret it:
Christopher: AddHandler php5-script .php
Christopher: This code should be added on the .htaccess file.
Christopher: If you need to have your php be interpreted by our PHP 4.1.2, just change php5-script to php4-script.
Christopher: Each folder that has a php file should have their own .htaccess file.In order to edit your .htaccess fill, you simply need to download it from your server to your hard drive, open the file in notepad, insert the new (or replace the existing) AddHandler instruction [AddHandler php5-script .php], save and reload.
Files with the .php extension will now trigger PHP5.
MrJaymo