OCModShop published a guide about putting MyComputer on Vista's Taskbar
>>> Put MyComputer on Vista's Taskbar
Many of us like to have the quickest possible route to our commonly used folders. Even though nearly everything is accessible via the Start Menu, I like to have one-click access to commonly used items, such as Internet Explorer and My Computer.
The Vista taskbar comes with some neat pre-defined Toolbars (like Quick launch and Windows Media Player), but did you know you can create a toolbar from just about any object on your PC? You can add the Computer menu as a folder to have quick access to your drives, shortcuts and network connections. You also like to add my Desktop as a Toolbar, so I can always access stuff on my desktop even if they're buried under a bunch of open Windows.
>>> Put MyComputer on Vista's Taskbar