How to change the description of the products in Spanish? plugins

[monzon]

Hi guys, I'm heading for LATIN AMERICA products, but I need to know how to change the description of the products completely in Spanish.
Example: "Unlimited Disk Space," a -> Espacio en disco ilimitada.

I need to do what he does: http://true-cloud-hosting.com/es/

I really need your help.

or I need alternatives, DO SOMETHING FOR PROFESSIONAL DESIRE.