Mac OS X Lion got an option to trim down your System Preference to display the one that you are planning to use most. Go through the steps by step to customize your Mac OS X Lion system preferences.
Step1: Click the Apple icon in the menu.
Step 2: Select System Preferences.
Step 3: click on View and select Customize tab
Step4: Now you will get a popup window with System Preferences Uncheck the corresponding checkbox for each panel you wish to hide.
Step5: To finish and apply your changes click on done button.
Your system preferences now only the panels that you selected and the other panels will be hidden automatically.Let me know if any difficulties in customizing your Mac System Preferences.