Do you think this maybe has to do with Mountain Lion?
Here's a screenshot of no Dreamweaver CS6 folder in Library/../..
And no, it's not in the "Adobe Creative Suite 6 Design and Web Premium" folder either. I keep going through all of the folders hoping the Dreamweaver cs6 folder will show up, but nothing! Thanks for your help guys. If you think of anything else, please respond!
You're looking in the hard drive Library folder... Your preferences are user-specific, so would be within your user Library folder.
As of Lion, Apple hides the user Library folder by default, so you may not have been able to find this folder.
See this article for some tips on accessing the hidden user Library folder: http://helpx.adobe.com/x-productkb/global/access-hidden-user-library-files.html