Seven Transformation Pack will replace many of the resources in Windows XP/Windows Server 2003. It can change such things as:
Boot screen
Welcome Screen / Logon Screen
New msstyles files (visual styles)
New desktop and file icons
New toolbar icons
Progress Dialogs
Sounds scheme
System Tray icons
New Wallpapers
Some Windows 7's popular features
And much more

-Added Superbar tweaks for sleek and groupped taskbar item
-Added Windows 7 new wallpaper
-Added Windows 7 user pictures
-Fixed scrnrdr.exe application for being reported as malware
-Fixed WindowBlinds skin detection bug in Welcome Center
-Removed LClock as it doesn't fit new taskbar UI anymore
-Removed Styler toolbar as it becomes obsolete with ViSplore
-Removed VisualTooltip due to its glitches caused with the system
-Updated battery tray icon
-Updated logon screen with horizontal account list.
-Updated logon startup branding to Windows Seven
-Updated Vista Rainbar's default background to transparent (without border)
-Updated theming engine to apply themes and automatically
-Updated system to load/save configuration for Personalization
-Updated Transformation Destination information context for better understanding
-Updated TrueTransparency to version 1 with SevenStyle skin
-Updated user account's optimization settings
-Updated ViSplore with Windows Seven skin
-Updated ViStart to version 2.0 build 3468 (Native mode) with Windows Seven skin
-Updated visual styles to Windows 7 ones called "Windows Seven"
-Updated ViOrb to ViGlance (Superbar emulation)
-Updated Windows 7 icons
-Updated ViSplore and WinFlip to be safe applications