If you right click on the Control Panel in Start Menu, you cannot find the Pin to Taskbar right click contextual menu item that allows user to pin the Control Panel shortcut to Windows 7 Taskbar. Event if you drag and drop the Control Panel shortcut to Taskbar on Windows 7 to pin Control Panel folder on Taskbar it will not work. This hitch up can be solved with a hack. Well, there's a hack using which you can pin any folder to the Windows 7 taskbar for Control Panel. Still there's an easier hack that I would like share with you.
Here are the steps you need to follow in order to pin the Control Panel to Windows 7
Step 1: Open the Control Panel
Step 2: You can see the Control Panel button displayed on the Windows 7 Taskbar.
Step 3: Right click on the Control Panel icon on the Taskbar and choose the Pin this program to taskbar option.
Step 4: Close the Control Panel
You are done, the Control Panel button has been pinned on the Taskbar
How to Unpin this program from taskbar
In case you want to unpin the Control Panel from Taskbar, right click and select the Unpin this program from taskbar