Actual Transparent Window 4.4 

Actual Transparent Window lets you apply transparency effect to any window. The transparency effect looks very impressive and may be useful with such objects as Windows Taskbar, Winamp, drop-down menus, and other windows. The transparent Taskbar doesn't hide any part of your desktop wallpaper. The transparent drop-down menu does not obscure the main program window. It lets you set individual transparency rate for each window. You can change transparency from 0% (fully transparent) to 100% (solid) to achieve the desired effect. It saves all your settings so that you need to set the transparency only once for each window.