Can't modify LoadModule line for PHP

[istojic@xxxxxxxxx]

Hello all,

A summary:
Modifying httpd.conf to try to point "LoadModule php5_module" to point to anywhere but the original location results in Apache not being able to start again.

And the history...
I'm a recent Mac convert running OS X 10.5.2 (aka Leopard), with it's pre-bundled Apache 2.2 and PHP 5.2.4.  In an attempt to get GD library working, I installed two additional copies of PHP (and one additional copy of Apache due to a lack of understanding about how Macports works).  When I attempt to change the LoadModule line to point from the original "libexec/apache2/libphp5.so" to a different libphp5.so file, Apache log files show the following error when I attempt to restart it "caught SIGTERM, shutting down".  This error also occurred prior to the second Apache installation.

I'd like to know a) what causes this error since it seems to be a straightforward change everywhere else I've looked, and b) how I can verify that the second Apache install isn't running.  I've already determined that the second Apache and the "Web sharing" in System Preferences are unrelated.

When the server does run, I've recently begun receiving a "[warn] module php5_module is already loaded, skipping" error twice, despite the LoadModule line only being listed once.

It's highly frustrating and I'd appreciate any help.