what it the 1 thing to install it from the ps3 or the computer it possible to have explication or web page

 

thank you for help me

 

You mean something like that : http://customsforge.com/topic/901-how-to-use-custom-dlcs-in-rs2014/

Is there any way to switch files to edat to make them work on ps3

Yes its easy with the toolkit.  There is a converter tab.