You have not been able to progress to the point of running php5info.php.
If you followed the tutorial you will have php5 installed in c:\server\php5
(note: you don't need to stick to the settings in any tutorial - you can choose
your own PHP installation location - my php-5.0.2 installation is in c:\php\ and php.ini is in c:\windows)
...
Let's try a few basic steps to pin this down .. start by running php from command line ..
http://uk2.php.net/features.commandline
Launch Command Prompt window (Start | Accessories | Command Prompt) and
run c:\server\php5>php --version
You should see PHP 5.0.2 version etc. (just a couple of lines of info on version).
...
Now run c:\server\php5> php -i
This should bring up the full phpinfo information in command prompt window.
You can output this report to a text file by running the command again .. but output report to a file
c:\server\php5> php -i > phpinfodump.txt
This places the output in same folder as php.exe.
You may need a text editor such as http://www.editplus.com to properly format and view the file.
...
If all these basic steps work ..
are you sure that you have the correct php5info.php file:-
<?php phpinfo(); ?>
and you are running http://localhost/php5info.php
with php5info.php in your document root as set in Apache httpd.conf.
and in httpd.conf ..
ScriptAlias /php/ "c:/server/php5/"
(if that is your php5 installation .. note the forward slashes)
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this link might help on troubleshooting router issues (if any):-
http://www.dslwebserver.com/main/fr_index.html?/main/quick-start.html
including (yet more) advice on Apache and PHP installation.
http://www.dslwebserver.com/main/fr_index.html?/main/sbs-php.html