Longhorn Transformation Pack

Before Windows Vista got to be known and marketed as Vista, its codename was "Longhorn" and developers used this moniker when creating software that would recreate the visual appearance of this OS.
Longhorn Transformation Pack is meant to allow Windows XP and Server 2003 users to revamp the look of their computers, and give it a fresh makeover by making them resemble Vista.

Change the looks of your Windows XP

Since Longhorn was tweaked and optimized before turning into Vista, this software does not transform the host PC into Vista per-se, but into a variant of it that was the initial take Microsoft took on the OS.
Before applying the transformation though, it is highly recommended to backup the original files, just to be on the safe side of things and make sure restoration is possible in case anything goes wrong.

Several changes applied to your system

This software does not change only the wallpaper or the taskbar skin, it completely replaces the login screen, the Start button icon, progress dialogs, toolbar buttons, or boot screen.
Users also get the chance to modify the system font, set toolbar to Longhorn style, and install Longhorn display pictures, screensaver, sidebar, visual styles, and wallpapers.
After restarting their computer, users are met with a complete overhaul in terms of visual experience for XP or Server 2003, and it might even take users some time to get accustomed to the bright colors, animations and new icons it includes, especially since the sidebar is a complete new addition.

Bottom line

All in all, Longhorn Transformation Pack brings some important changes in order to give your system a major facelift. The PC's look can be further tweaked and refined, and users are encouraged to play around with the software's settings until they are completely pleased with the outcome.