Can't get domxml working

Hi everyone! I've been trying to include php_domxml.dll for quite a while, but it just doesn't work out. When I'm invoking "php -?" on the command line I get an error message saying: Unknown(): Unable to load dynamic library 'php_domxml_dll' - A library file required for the execution of this application can not be found. [Second part loosely translated from german] In php.ini, I have extension_dir set to f:\php\extensions, the directory where php_domxml.dll actually resides and extension=php_domxml.dll uncommented. While searching for a solution I read it could help to copy the dll files to C:\windows\system, which I did, but it didn't. My OS is Win98, php version is 4.3.1. I'm aware that the domxml library is not considered stable for use, but anyway qould like to have a DOM parser for my problem, at least to get a start... Any ideas what could be the cause for my problem or what else I could try? Any suggestion is highly appreciated! Best regards, Stefan