Apache 2.0 instructions are here;
http://us2.php.net/manual/en/install.apache2.php
Apache 1.3 instructions are here:
http://us2.php.net/manual/en/install.apache.php#install.apache.windows
You need to modify your http.conf file
Example 3-7. PHP and Apache 2.0 as CGI
ScriptAlias /php/ "c:/php/"
AddType application/x-httpd-php .php
Action application/x-httpd-php "/php/php.exe"
If you would like to use PHP as a module in Apache 2.0, be sure to move php4ts.dll for PHP 4, or php5ts.dll for PHP 5, to winnt/system32 (for Windows NT/2000) or windows/system32 (for Windows XP), overwriting any older file. You need to insert these two lines to your Apache httpd.conf configuration file to set up the
PHP-Module for Apache 2.0:
Example 3-8. PHP and Apache 2.0 as Module
; For PHP 4 do something like this:
LoadModule php4_module "c:/php/sapi/php4apache2.dll"
AddType application/x-httpd-php .php
; For PHP 5 do something like this:
LoadModule php5_module "c:/php/sapi/php5apache2.dll"
AddType application/x-httpd-php .php
Note: Remember to substitute the c:/php/ for your actual path to PHP in the above examples. Take care to use either php4apache2.dll or php5apache2.dll in your LoadModule directive and
notphp4apache.dll or php5apache.dll as the latter ones are designed to run with
Apache 1.3.x.