Cannot start apache after installation of PHP4.0

HI, all: I am new to PHP. I tried several times to install PHP4.0 into my RedHat Linux which already has mysql and apache1.3 installed. I only got this message when I tried to run the web server: .---------------------------------- [root@broekhoven lib]# /etc/rc.d/init.d/httpd start Starting httpd: Syntax error on line 872 of /etc/httpd/conf/httpd.conf: Cannot load /etc/httpd/modules/libphp4.so into server: /etc/httpd/modules/libphp4.so: undefined symbol: php_XML_SetUnparsedEntityDeclHandler

                                                          [FAILED]

---------------------------------- configure commands are as follows: ---------------------------- ./configure --prefix=/usr/local/php4 --with-config-file-path=/etc/httpd --with-mysql=/usr2/mysql3 --with-apxs=/usr/sbin/apxs --enable-track-vars--enable-magic-quotes --enable-debug ------------------------- I have aslo change some lines "LoadModule php4_module modules/libphp4.so". There is an old PHP3.0 installed before I tried to install php4.0. And I failed to remove it using : shell> rpm -e php. Could anyone help me out with this problem? Thank you very much for your help! Duo _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com