[PHP] installing php4 in windows 2000

[rohit mohta]

i have configured apache 2.0.49 in my system and included the following lines of code 
in my http:conf file

LoadModule php4_module "c:/php/sapi/php4apache2.dll"
AddType application/x-httpd-php .php

i have also configured the  php.ini file and created a test script(phpinfo.php,placed 
it in my htdocs directory) to check whether php has been properly installed or not
but when i run the testscript by entering the follwoing line in the address bar of 
internet explorer

localhost/phpinfo.php

i get the following error message

HTTP 404 - File not found
Internet Explorer 

can somebody please help me to know where am i going wrong

[PHP] query-apache2.0.49 installation

[rohit mohta]

  
whenever it try to manually start apache 2.0.49 from my system it throws the following 
error
only one useage of each socket address  is normally 
permitted :make sock could not bind to address 127.0.0.1:80
no listening sockets available ,shutting down
unable to open logs

when i enter localhost at the address bar of internet explorer the html page stating 
apache has been successfully installed.But when i try to run a testscript it throws an 
error stating that

html file not found

can any one please say me where i may be going wrong