phpinfo.php File Not Found

Hello, I've installed Apache and PHP4 on my Windows 2000 Pro machine. Can someone tell me what I have done wrong? When I use my browser to see http://localhost/phpinfo.php, it says File Not Found with Error 404. The file is there and contains the code <? phpinfo() ?> I installed PHP4 in d:\php4, and set the following lines in my php.ini file, which resides in d:\winnt\: doc_root =d:\program files\apache\htdocs user_dir = extension_dir = d:\php4\extensions The Apache is installed in d:\program files\apache group\apache\, and I've set the following lines in my conf\httpd.conf file: ScriptAlias /cgi-bin/ "D:/Program Files/Apache Group/Apache/cgi-bin/" ScriptAlias /php4/ "D:/php4/" AddType application/x-httpd-php .php .phtml AddType application/x-httpd-php-source .phps Action application/x-httpd-php /php/php.exe And yes, I did start the Apache server. I can see http://localhost Thanks Titus