Fedora Servers :: Apache Does Not Output Php

I have now blown Windows XP away completely and done a clean install into 80Gb hard disk (x86). I know that httpd is running and I've added the snippets to httpd.conf that output server status and server info to the web browser, so I can see that all the required PHP stuff is loaded. So something like http://localhost/server-info works fine but something like http://localhost/helloworld.htm produces the wrong output:

contents of helloworld.htm:

<?php>
print("hello world");
print(phpinfo());
<?>

[Code]....