I want to know that is there any such service packs of operating syste
that can give me GUI of Windows Vista but working efficiency of Window
Xp?I initially used Vista but liked its GUI thats it nothing else i
impressive regarding Vista but as I am use to Xp can I get anythin
combination of both as I have asked for

There are many of then, here are just a few examples
'XPize - Make your XP look like Windows Vista - GUI Enhancer - Softwar
Reviews by ReviewSaurus | ReviewSaurus - The Techie Dino!
(http://tinyurl.com/5qlzec
'Download Windows Vista Transformation Pack 8.0.1 - Windows Vist
Transformation Pack will update your Windows XP with the latest Window
Vista GUI.' (http://www.soft32.com/download_3720.html
'Windows X’s Shrine » Vista Transformation Pack
(http://www.windowsxlive.net/?page_id=15