Windows 7 taskbar has the awesome feature of pinning items for quick access and this was carried forward by the new IE9 beta. But the pin to taskbar option is generally available only to .exe files. Windows 7 Taskbar Items Pinner is a free portable tool which allows you to pin files, folders and also webpages to your Windows 7 taskbar. The application also has pin to taskbar option for most of Windows folders like My Computer, recycle bin, Control panel etc.
The usage of application is very simple, select the folder or file you want to pin to the taskbar and then select a suitable icon for the same and then click Add item. Make sure that you run the application in administrator mode.