Hi please can you help me. I have photoshop CS5 extended, I bought a new camera Nikon D610 I want to edit my photos adobe camera raw , but when I try to open photoshop CS5 it will not open. Please can you tell me how to download and install the camera raw

HI bought a new camera Nikon D610 , I am using adobe photoshop CS5 extended, I want to edit my photos in camera raw but it is not possible to do so . I need to download camera raw plugin for CS5 can some tell me how to do so or if there is a link for the camera plugin.

Many thanks Pitt.