I ran into lots of problems with the cannot load module php4apache.dll
Anway, after looking for hours to find a solution I wrote up a tutorial with a step-by-step installation guide to installing Apache 1.3.x and PHP 4.2 (sorry I couldn't get Apache 2.x to work yet)
I posted this link here not to pull people away from PHPBUILDER, I love the site, however I did a search on "cannot load php4apache.dll" with google and this was the first thread that popped up --- in short, since this page is high in rankings maybe people can find a solution faster.
Enjoy!
TUTORIAL LOCATION :
http://www.sitepointforums.com/showthread.php?s=&threadid=59725
holmescreek@holmescreek.com
www.holmescreek.com