MySQL on RedHat ES 3.0

[Ferguson, Michael]

G'Day All,
 
I successfully installed RedHat ES 3.0 and would like to get MySQL
installed on it. After reading the online manual at
dev.mysql.com/doc/mysql/en/Installation_layouts.html I am still a bit
unsure of my next move. 
Can some please help me out with directions on how to check the system
to verify whether or not MySQL is installed, and how to download and
install MySQL on this server.
 
Many thanks and best wishes.
 
Ferg.