'xml' PHP extension is not installed

hi all, i am using pear version 1.3 and php version 4.2.3 on OpenBSD 3.3 i386. i am experiencing an odd problem and don't know how to work around it; i try to install the package 'Config' which has a dependency to XML_Util. trying to install XML_Util gives me an error : $ pear install -f -n -B XML_Util downloading XML_Util-0.5.2.tgz ... Starting to download XML_Util-0.5.2.tgz (6,540 bytes) .....done: 6,540 bytes 'xml' PHP extension is not installed xml is installed tho: $ php -m Running PHP 4.2.3 ... xml ... just to make sure i have manually added the command line switch -c ini_file in the pear script. questions: 1) why is pear not finding out that xml is installed? 2) why is eighter (or both) of the options -f -n still not allowing me to install even if i don't care about deps? personally i don't really care what pear thinks ... i just need this extension installed (i actually don't even need xml config files). any help will be appreciated. Cheers, Simon