PHP Configuration problems

Dear Sir/Madam, These days I am studying php, however, there are always problems of configuration with php under windows 98. Could you tell me how to configurate it in detail. In perticurly,when I deal with some codes about domxml function, the browser always shows like this: <br><b>Fatal error</b>: Call to undefined function: domxml_open_mem() in <b>c:\apache\htdocs\svg_dom_xml_php_bsp.php</b> on line <b>76</b><br>. What is wrong here? I also looked through the web site www.php.net. But I was confused with so much information.Should I download GNOME XML library? Should domxml run only under linux, not windows? Should domxml run above the version php4.0.x? If possible under windows, how can I get the GNOME XML library and then how to install it? At last,how can I configurate php again after installing it? Do you know the software phptraid-2.2.1? After installing it, I can do nothing about the configuration? And, which version of php is in this phptraid? Thanks for your reading my mail. Best regards, Lu Wang --------------------------------- Do you Yahoo!? Yahoo! Finance Tax Center - File online. File on time.