Newbie

Hi list, I have just installed PHP4.3.3-Win32. I have a book that said create a phpinfo.php ( <? phpinfo(); ?> ) file and place it in my Apache 2 htdocs file. I did this and when I run it opens in a blank page of DreamweaverMX. I tried to "open with" Internet Explorer and it does nothing. My question is what file would tell it to open in DWMX or how do I get to the opening set-up page of PHP. I used php4.3.3-installer.exe but I got the message that it would have to be installed manually. Any help or direction would be appreciated. John H.