Upgrading PHP on Redhat

Hi all. What's the correct procedure to upgrade PHP (in this case 4.0.6) on a Red Hat system? Usually I just get the PHP tarball compile it myself but for this particular machine I just want to upgrade the Redhat PHP that's on the system. As you guys know Redhat puts its PHP (and Apache) files in different locations- e.g. php.ini is in /etc. I looked for some RPMs but I kept getting failed dependencies when trying to install them- e.g.: # rpm -Uvh php-4.1.2-7.2.4.i386.rpm error: failed dependencies: php = 4.0.6-15 is needed by php-manual-4.0.6-15 php = 4.0.6-15 is needed by php-imap-4.0.6-15 php = 4.0.6-15 is needed by php-ldap-4.0.6-15 php = 4.0.6-15 is needed by php-mysql-4.0.6-15 php = 4.0.6-15 is needed by php-odbc-4.0.6-15 php = 4.0.6-15 is needed by php-pgsql-4.0.6-15 I'm not an expert in using rpm so I'm probably doing something completely wrong??? David