[http://www.ifixit.com/MacBook-Parts/MacBook-Unibody-Model-No-A1342-Display-Assembly/IF160-024|Here] is the part, but unfortunately there doesn't seem to be a guide. However, the installation is only 'moderate' so you should probably be able to do it yourself. Perhaps if you look at the guide for the non-unibody model you can figure out how to do the insides, and to take it apart just follow the teardown. The parts you need are listed on the page with the part. Good luck!