MySQL 5.0.95 Upgrade

Hi,

Want to upgrade MySQL to at least 5.5, does anyone have any steps to do this? I assume then have to upgrade PhpMyAdmin as well after?

This is what I have installed currently;

rpm -qa | grep mysql
mysql-5.0.95-5.el5_9
mysql-5.0.95-5.el5_9
mysql-devel-5.0.95-5.el5_9
php-mysql-5.3.8-1.w5
mysql-server-5.0.95-5.el5_9
mysql-iworx-4.0.21-9.rhe5x.iworx
mysql-devel-5.0.95-5.el5_9

Any help would be appreciated!

pjmartins