DOMXML not working on apache

[boff2000]

I recently installed php4 on my local apache server and it seems to be working. However, I'm creating a php CMS for xml content, so ive learnt i need to enable the DOMXML extension.

I enabled it by uncommenting the line in the php.ini file. I ran a test, and it says that domxml IS enabled - however, im still getting domxml_open_file() errors.

this is a test on my hosting server (where it all actually works - the problem is on my local server)
[a href=\"http://www.busnumber56.com/test.php\" target=\"_blank\"]http://www.busnumber56.com/test.php[/a]

this is a test on my local server **might be down, depending if im home or not :P **
[a href=\"http://palangi.mine.nu:57/test.php\" target=\"_blank\"]http://palangi.mine.nu:57/test.php[/a]


I have a feeling it has something to do with this configuration stuff.. eg:
'./configure' '--prefix=/usr/local' '--enable-discard-path' '--with-gettext' '--enable-exif' '--enable-bcmath' '--enable-calendar' '

I have NO idea how to get all that happening. googled for houuurs!