[beginner] How to update mysql with Linux ?

[Francesco Marchioni]

Hi all,
I'd like to update my version of Mysql on linux. 
How can I do it so that I don't have two copies of mysql on my machine ?
Do I have to clean up the folder "mysql" and then install the new version under it?

And what should I download -the source code or the binaries- in order to
update the starting scripts under /etc/rc.d/init.d ?

Thanks a lot
Francesco
[EMAIL PROTECTED]