Installing PHP 4 as rpm on RedHat 6.2 !!

Hello All, I have already php 3.0.18 installed on my RH 6.2 box. I want to install PHP 4 now. But if I still the following message: [root@proxy mohamedou]# rpm -Uvh php-4.0.4pl1-3.i386.rpm error: failed dependencies: libdb-3.1.so is needed by php-4.0.4pl1-3 libgd.so.1.8 is needed by php-4.0.4pl1-3 libc.so.6(GLIBC_2.1.3) is needed by php-4.0.4pl1-3 libc.so.6(GLIBC_2.2) is needed by php-4.0.4pl1-3 libresolv.so.2(GLIBC_2.2) is needed by php-4.0.4pl1-3 php = 3.0.18 is needed by php-imap-3.0.18-6.2horde1 php = 3.0.18 is needed by php-mysql-3.0.18-6.2horde1 [root@proxy mohamedou]# Which rpms are responsible for that? Every help will be apreciated Thnx in advance Moh