[CentOS] downgrading mysql

Tue Jan 23 18:33:14 UTC 2007
CentOS List <centoslist at gmail.com>

Hi,

I had upgraded mysql from mysql-4.1.20-1.RHEL4.1 to mysql-5.0.22-1.centos.1 
via CentOS plus. Now I would like to downgrade it back to the 4.1 version. 
How can i get this done?

thanks
LC