Help for PHP Newbie!

I've installed PHP 4.3.2 with Apache 1.3 and believe I've followed all the configuring instructions to the letter. I create the phpinfo.php script file for testing and placed it in the C:/program files/apache group/apache/htdocs folder for testing. When I type localhost/phpinfo.php in my browser, the script is not being parsed. The script is simply displayed in the browser window as raw text. I can display all of the html documents in the htdocs folder fine but any php document I browse to simply displays the raw text in the browser. It acts the same whether I try at the localhost or from another computer on the network. What am I doing wrong? Any help will be greatly appreciated! Bud Roble broble@CharlesRobleConsulting.com (805)794-3027