PHP 5.1.6 not working with Apache 2.23

I just dled and installed the latest version of Apache and PHP (2.23 and 5.1.5 respectively). PHP doesnt work. If I leave out the PHP AddType directives etc from the Apache .conf file, apache starts no problems. If i try and use PHP it doesnt start.

I read on apachelounge forum that i have to dl a modified php5apache2.dll but what im wondering is why dont these 2 hand-in-glove technologies support each other this version? Do the devs know about it? Whats the story?