If you are a Windows Xp user and haven’t upgraded to Windows 7 but Want the same transparent tasbar in your Windows Xp then here is a free application for all Windows Xp users.
By using TransBar you can make your Windows Xp taskbar tranparent,it is a very small application which allows you to add transparency to your Windows taskbar.
All you need to do is just download this and install after installing this when you open it a small window will appear,Just drag the pointer left Or right to get the transparent taskbar which suits you best.
You may use following link to download it:-