Disable "Pin This Program To Taskbar", Can It Be Done?

I would like to remove the "Pin This Program To Taskbar" context menu entry that appears in the right click menu's of taskbar icons. I've found two methods online, each covered in a tutorial guide posted here, but neither have worked for me. Anybody else have any luck with this?

Note that I am using Windows 7 Home Premium so I do not have access to the Group Policy Editor. However, microsoft posted this spreadsheet which details each GPEdit settings function and where in the registry GPEdit makes changes when a user uses the GPEdit interface. I've manually entered the registry key described in that spreadsheet.

I finally found a solution! I have found a program called 7 Taskbar Tweaker which is freeware and has an option which successfully reverts taskbar context menu's to their Windows Classic form. The new aero menu is completely gone! Yay me