Web Server can't Parse PHP files

[subhuman]

I have a laptop here running on Windows XP SP2 with NTFS file system. I have perfectly installed MySQL, Apache 1.3.x. I have 2 PHP versions here, 4.3.0 and 4.3.10. I also installed the Zend Optimizer for 4.3.10.

On the first installation using 4.3.0, whenever I will access a PHP file, it redirects me to 404 error which means that the page isn't found. I reinstalled again using the same version and it gave the same results. On the other hand, using 4.3.10, and installing the Zend Optimizer for it, it also gave the same result.

phpinf0(); doesn't even work and I am wondering what is the cause of this. I don't want to use any package for PHP since the version of PHP there is of the lower version. Any help?

[MPT]

I have exactly the same problem... enyone?

[subhuman]

I've tried installing PHPdev, a PHP-Mysql-Apache package for Windows XP. The package works well though the version is really low. Moreover, the Zend Optimizer is not compatible with the version installed with it. I tried installing a higher PHP but there's an error with the php_zlib.dll then it was all chaos.

Any help still on the first problem? Thanks.