Help with changing dock.

[AutomaticHaze]

I'm trying to change my dock, and for the life of me cannot find the path to ssh to replace the files. I've googled and also searched on here, but all the instructions say to go to a path that begins with "system" and i can not find it. I'm willing to bet its right in front of me but im not finding it, any help would be great! Thanks!

 

[THE dAY]

Best to add what firmware you are on, 4.2.1? And what screen, Standard or Retina?

The location is /System/Library/CoreServices/SpringBoard.app/

If on 4.2.1 retina, I've read that you have to replace both SBDockBG.png and SBDockBG@2x.png

Make sure to back up originals just in case.