Hidden Preference Panes for Mac OS X

Preference panes are dynamically loaded plug-ins that provide a graphical user interface to the system’s or an application’s user preferences - Apple

In System Preferences, each icon represents an individual preference pane plug-in which can be used to change or modify the setting for each application.
Most of preference panes contain generally used application. We can also create our own preference panes that will be able to be used by System Preferences or even by your application. The link above contains the details, if you're interested.

I found few application that help us activating hidden preference pane. First application is the Archive Utility. Following these steps will help you :

1. Open Finder
2. Navigate into Mac HD ▸ System ▸ Library ▸ CoreServices ▸ Archive Utility.app
3. Show contextual menu and choose Show Package Contents
4. Open Contents ▸ Resources ▸ Archive.prefPane

Once you double click the "Archives.prefPane" then it will prompt up for installation and password required if you install it for all users on your mac.

Repeat the same thing, you can do it for Disk Image Application. Go to using your Finder - Mac HD ▸ System ▸ Library ▸ PrivateFrameworks ▸ DiskImages.framework ▸ Versions ▸ A ▸ Resources. Find the preference pane and double click it to install it.

Beside, I found out a very nice various kind of preference panes that can modify a lot of Mac OS X hidden feature.
Check out this website which will reveal you the secret. This application is done by the same developer who develops Quicksilver.
Overdoing this may be harmful to your Mac because you're playing around with your system file. Most of the case take effects after rebooting your computer.