Mysql 4.1 - Upgrade PHP Mysql API Client

Hello, I've a question regarding PHP and mysql 4.1 The are my system values: - Windows XP - PHP 4.3.1 - Mysql 4.1 - Apache 2.0.45 When you run a PHP script that connects to a Mysql database you get an error saying that the authentication protocol is not supported and that you should upgrade your client. When I display a php page with phpinfo() i see that my client version in php is 3.23.49 As i've read you can upgrade the version of your client with the \"--with-mysql\" parameter. The question I have on this issue is that how can i specify this parameter when recompiling on Windows. Or is there a parameter e.g in PHP.INI where you can put the path of Mysql so that PHP uses the newer version of the client. SO I'm looking the solution on how i can upgrade my MySQL client in PHP under Windows ? Tnx in advance for the answer, Kind regards, Tom