Any known issues about 'php_xslt.dll'?

Hello, I'm trying to get PHP running on my home machine (Apache 2.0.46, php 4.3.2 as CGI, WinXP)to develop scripts for use on my ISP's server, and I ran into trouble enabling the XSLT extension. I set the extension_dir in php.ini and uncommented the "extension=php_xslt.dll" line. When running any php pages I get a Warning: "Unknown():Unable to load dynamic library...Module not found." After fiddling around with different directories I tried to uncomment other extensions - and they worked without problems! So it's not a problem with the path information but with the dll (perhaps a wrong dll version?). It is the one I got from the php-4.3.2-Win32.zip file. Are there any known issues about this? Could it be that I have to download a different version of the dll - and where could I get this? Any help would be appreciated Regards Urs Liska