about old ports

[Expresso Digital ISP]

Hi, my name is Cesar and I like to know how can I do to install an old port?
I update the ports with portsnap, but I have to install mysql-server-5.1.11, 
because my system works with this database version.

Regards

-- 
Att.
 
Expresso Digital ISP - tecnologia.multimidia.seguranca
Cesar Vogelsanger
MCSO - Módulo Certified Security Officer
Administrador de Tecnologia
Divisão de Segurança da Informação
Joinville - SC - Brasil
+55 (47) 3433-1516
e-mail: cesar at expresso.com.br