Win 7,
Right click on the taskbar and select Toolbars> New Toolbar, then select the folder or drive. Then if you want it docked to the side of the screen simply click and drag the taskbar from the bottom to the side of your screen. Then right click in an empty space on the taskbar again and make sure "Lock the taskbar" is unchecked. Now you can click and drag the edges of the toolbars to rearrange them, and put them next to each other like in my image if you want. Right clicking on the new toolbar also gives you the options of viewing using large or small icons, showing text, titles, and many more options. Have a play.