PHP5+winXP+ii6 installation problem

I have problem with the installation of PHP5 on SO Window XP and II5 I started with the manual installation on window and then wondered on the FAQ pages of the www.php.net site. I tried to apply several solution advised by some users but the result is that I wrote a PHP page <?php phpinfo()?> I copied it on my PHPtest directory under inetpub/wwwroot and I have always the same 404 error. I installed PHP under c:/PHP the page is on the directory: c:\inetpub\wwwroot\PHPtest\info.php reading the FAQ or installation hints there is a big mess because people says copy the ini under the system directory someone else says don't do it ... can I have the solution based on my environment (PHP5+XP+II5)? ps:php is well-installed because if I launch the php -i command I have all the information it means that something is wrong in the server configuration!! Last question: the manual installation says that with II6 I can choice to work on the CGI way or ISAPI the choice is exclusive? Thank you Marina Bortolotti