I tried to configure Apache 2.2.17 with PHP5.4 using this manual. But when I restarted my PC and went to http://localhost/phpinfo.php, I received this message:

Not Found. The requested URL /phpinfo.php was not found on this server.

Here is my httpd.conf - (full version with comments) and a copy with the comments stripped for brevity:

ServerRoot "C:/Program Files/Apache2.2"

#Listen 12.34.56.78:80
Listen 80

LoadModule actions_module modules/mod_actions.so
LoadModule alias_module modules/mod_alias.so
LoadModule asis_module modules/mod_asis.so
LoadModule auth_basic_module modules/mod_auth_basic.so
LoadModule authn_default_module modules/mod_authn_default.so
LoadModule authn_file_module modules/mod_authn_file.so
LoadModule authz_default_module modules/mod_authz_default.so
LoadModule authz_groupfile_module modules/mod_authz_groupfile.so
LoadModule authz_host_module modules/mod_authz_host.so
LoadModule authz_user_module modules/mod_authz_user.so
LoadModule autoindex_module modules/mod_autoindex.so
LoadModule cgi_module modules/mod_cgi.so
LoadModule dir_module modules/mod_dir.so
LoadModule env_module modules/mod_env.so
LoadModule include_module modules/mod_include.so
LoadModule isapi_module modules/mod_isapi.so
LoadModule log_config_module modules/mod_log_config.so
LoadModule mime_module modules/mod_mime.so
LoadModule negotiation_module modules/mod_negotiation.so
LoadModule rewrite_module modules/mod_rewrite.so
LoadModule setenvif_module modules/mod_setenvif.so
LoadModule php5_module "C:/Languages/PHP/php5apache2_4.dll"

# PHP
AddHandler application/x-httpd-php .php
PHPIniDir "C:/Languages/PHP"

<IfModule !mpm_netware_module>
<IfModule !mpm_winnt_module>

User daemon
Group daemon

</IfModule>
</IfModule>

ServerAdmin [email protected]

#ServerName localhost:80

DocumentRoot "C:/Sites"

<Directory />
    Options FollowSymLinks
    AllowOverride None
    Order deny,allow
    Deny from all
</Directory>

<Directory "C:/Sites">

    Options Indexes FollowSymLinks

    AllowOverride All

    Order allow,deny
    Allow from all

</Directory>

<IfModule dir_module>
    DirectoryIndex index.php index.html
</IfModule>

<FilesMatch "^\.ht">
    Order allow,deny
    Deny from all
    Satisfy All
</FilesMatch>

ErrorLog "logs/error.log"

LogLevel warn

<IfModule log_config_module>
    LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
    LogFormat "%h %l %u %t \"%r\" %>s %b" common

    <IfModule logio_module>
      # You need to enable mod_logio.c to use %I and %O
      LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio
    </IfModule>

    CustomLog "logs/access.log" common
</IfModule>

<IfModule alias_module>
    ScriptAlias /cgi-bin/ "C:/Program Files/Apache2.2/cgi-bin/"
</IfModule>

<IfModule cgid_module>
    #Scriptsock logs/cgisock
</IfModule>

<Directory "C:/Program Files/Apache2.2/cgi-bin">
    AllowOverride None
    Options None
    Order allow,deny
    Allow from all
</Directory>

DefaultType text/plain

<IfModule mime_module>
    TypesConfig conf/mime.types

    #AddType application/x-gzip .tgz
    #AddEncoding x-compress .Z
    #AddEncoding x-gzip .gz .tgz
    AddType application/x-compress .Z
    AddType application/x-gzip .gz .tgz

    #AddHandler cgi-script .cgi
    #AddHandler type-map var
    #AddType text/html .shtml
    #AddOutputFilter INCLUDES .shtml
</IfModule>

#MIMEMagicFile conf/magic

# Some examples:
#ErrorDocument 500 "The server made a boo boo."
#ErrorDocument 404 /missing.html
#ErrorDocument 404 "/cgi-bin/missing_handler.pl"
#ErrorDocument 402 http://localhost/subscription_info.html

#MaxRanges unlimited

#EnableMMAP off
#EnableSendfile off

# Server-pool management (MPM specific)
#Include conf/extra/httpd-mpm.conf

# Multi-language error messages
#Include conf/extra/httpd-multilang-errordoc.conf

# Fancy directory listings
#Include conf/extra/httpd-autoindex.conf

# Language settings
#Include conf/extra/httpd-languages.conf

# User home directories
#Include conf/extra/httpd-userdir.conf

# Real-time info on requests and configuration
#Include conf/extra/httpd-info.conf

# Virtual hosts
Include conf/extra/httpd-vhosts.conf

# Local access to the Apache HTTP Server Manual
#Include conf/extra/httpd-manual.conf

# Distributed authoring and versioning (WebDAV)
#Include conf/extra/httpd-dav.conf

# Various default settings
#Include conf/extra/httpd-default.conf

<IfModule ssl_module>
SSLRandomSeed startup builtin
SSLRandomSeed connect builtin
</IfModule>

Directory with sites is C:/Sites and PHP is located at C:/Languages/PHP.