In Mountain Lion, you can choose which columns you want to appear in the Finder window from the Finder View Options window. Note that in order to set this preference, List View or Cover Flow View must be the active view.

To Choose Which Columns to Show:

1. Click the Finder icon on the Dock
2. Switch to either List View or Cover Flow View.
3. Choose View > Show View Options from the menu
   Or
   Press the ⌘ + J keystroke combination.
4. Under the Show Columns area, click the check box next to the columns you wish to display.
5. Set any additional options such as text size or icon size, if desired.
6. To apply the setting to all Finder windows, click the Use as Defaults button.
7. Click the close button on the window when finished
   Or
   Choose View > Hide View Options from the Finder menu.

Similar Posts:

• Turn TextEdit into a Word Processor by Inserting Tables
• Read Web Pages Offline using Safari’s Reading List Feature
• Sync Google Contacts with your Mac’s Contacts application
• Introducing Daily Mac Tips Courses
• Apple’s Best of 2014
• Create Links to an E-mail Messages in the Notes app