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

From Vista Transformation Pack 9.0.1
-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

-Added Windows Vista compatibilities (some desktop enhancements and applications)
-Fixed memory leaks in Vista Rainbar launcher but won't reload on resolution changes
-Fixed applications uninstallation script that doesn't remove all installed applications
-Fixed My Pictures folder icon showing My Videos instead
-Fixed resolution reader false positive report in Rainbar launcher
-Fixed restoring superbar tweaks in uninstallation
-Fixed uxtheme.dll patching routines in setup files integration mode
-Fixed Windows 7 default pictures installation (wrong directory)
-Updated ViGlance to version 1.0 build 1182
|-Aero Peek support (Live thumbnail, progress taskbar)
|-Pinning application
|-Options
|-Windows 7 RTM graphics
-Updated Windows 7 icons
-Updated Windows 7 visual style and WindowBlinds skin
|-All programs group menu item
|-Taskbar button
|-Taskbar flashing button

-Added automate configuration on startup for first-run user account
-Added deferred 3rd-party applications startup
-Added system files modification support for Windows Vista including
|-Branding
|-Main icons set
|-Logon screen background
-Fixed Disable unsafe configuration that may harm system in Welcome Center being disabled in Windows Vista
-Fixed icon size not restoring to 32x32 after uninstallation in Windows XP/2003
-Fixed MS Sans Serif font option not being configured
-Fixed out-dated settings of first-time configuration in Welcome Center
-Fixed system files verification reporting "Repair Needed" when both system file and backup not exist
-Fixed Use recommended application settings in Welcome Center permanently disabling applications don't meet requirements
-Removed annoying Display -> Appearance dialog after uninstallation in Windows XP/2003
-Updated configure user account to remember previous configuration
-Updated main dialogs' titlebar to dialog's name instead of application name
-Updated TrueTransparency
|-Core program to version 1.2 (with AeroSnap and AeroShake)
|-Optimized font color and shadow
|-Removed all skins but SevenStyle
|-Set caption font to Segoe UI (since program supports multi-font)
|-Updated maximized window title bar with solid black background
-Updated ViGlance to version 1.0 build 1194 (bug fixes)
-Updated Vista Rainbar
|-Core program remains same old Rainmeter to avoid VC++ 2008 dependencies
|-Removed Sidebar border
|-Re-arranged gadgets position to fit 800x600 resolution
|-Re-organized gadgets structure
|-Show desktop command no longer hide gadgets
|-Set default images in Slideshow to My Pictures folder instead of desktop wallpaper
|-Updated Windows 7 resources in some gadgets
-Updated Windows 7 RTM icons for
|-Add Hardware Control Panel Applet (including side graphic)
|-Calculator
|-Display Control Panel Applet
|-My Documents Folder UI
|-Network Connections Shell
|-Paint (including graphic toolbar icons)
|-Registry Editor
|-Time Date Control Panel Applet
|-Tray icons
|-Wireless Link Control Panel Applet
|-WordPad
-Updated Windows Seven visual style and WindowBlinds skin
|-Shutdown & Logoff buttons
|-Titlebar font color and shadow
|-Window frame border color
-Updated Windows UI in
|-Connection Manager
|-Remote Access
|-Remote Desktop Connection
|-System Control Panel Applet
|-Task Manager
|-Volume Control
|-Windows Update Client
-Updated WinFlip configuration for better compatibilities
|-Disabled multi-sampling
|-No caching thumbnail when new window appears
|-Use system memory for compatibilities with low VRAM card
|-Update Exclusion list during installation in case system drive letter isn't C

-Added giannisgx89’s "Windows 7 visual style for Windows Vista
-Added localization support with some fixes in wording and correction (You can modify vilang.sif for program to read in other languages. It may not work on languages with IME unicode charset though)
-Added more system files modification for Windows Vista
|-Shell Elements (Start Menu, Explorer)
|-Startup Animation
|-Tray Icons Set
-Added uxtheme.dll patching for custom theme compatibilities in Windows XP x64 Edition and Windows Vista (x86/x64)
-Added Windows setup files selection warning for people who use this normally but curious about it
-Added x64 system files modification support (Requires .NET Framework 2.0 or higher)
-Fixed 3rd-party applications startup conflicts with installation in configuration file
-Fixed boot screen not applying in some operating systems
-Fixed directory writable checking before preserving vtp.sif in local directory (CD, Network, etc.)
-Fixed exiting application when unsupported OS detected for uxtheme.dll patching instead of disabling uxtheme.dll patching
-Fixed launcher executable not being removed after uninstallation
-Fixed program not loading default configuration when vtp.sif isn’t present
-Fixed "Sevenlize basic desktop theme components” in Personalization to not apply default visual style when not selected
-Fixed some message boxes interrupting unattended transformation
-Fixed theme configuration bug when WindowBlinds isn’t installed
-Fixed Vista Rainbar gadgets positioning compatibilities with Windows Vista/x64
-Fixed Vista Rainbar not clearing startup settings when not installed in Personalization dialog
-Fixed WindowBlinds skin detection bug in Welcome Center
-Removed TrueTransparency from unsafe applications list but will be disabled when Windows Aero is running
-Removed Disable unsafe configuration that may harm system option since there’s no longer unsafe application available
-Updated multi-language support in logon screen and separated system files to modifying system files section
-Updated service pack checking compatibilities with x64 and non-RTM builds
-Updated system files verification to perform less file transfer operations
-Updated TrueTransparency to version 1.3 with x64 and blur support
-Updated ViGlance to version 1.0 build 1210 (Fixed pin saving)
-Updated ViStart to version 2.0 build 3686
|-Added Windows 7 User Interface (Windows X’s version)
|-Added Windows 7 Orb
|-Added Layout.xml for skin customization
|-Added Backwards compatibility with ViStart 6 skins
|-Added Greek language setting to Language Changer
|-Fixed Frequent items re-aligned to be more like Windows 7
|-Fixed Explorer keeps crashing randomly
|-Fixed Start button sometimes freezes
|-Fixed Games or full screen applications cause ViStart to sometimes stop being invoked
|-Fixed Sometimes ViStart disappears
|-Fixed Taskbar disappearance bug
|-Fixed Winkey combo-block bug
|-Fixed Poor interaction with ViGlance
|-Fixed New Programs Installed (Old Start Menu) bug
|-Fixed Floating Objects & Dual Screens bug
|-Fixed 64bit Support
|-Fixed Textbox invoke delayed focus
|-Fixed Invoke speed is about 9x faster
|-Fixed Font/Text not appearing on the right of the start menu
|-Fixed Blank hover image on Power menu and Frequently used programs
|-Fixed Recent items doesn’t appear on Windows Vista and Windows 7
|-Fixed Recent items menu is more responsive (26/10/2009)
|-Fixed Full support for Windows 7 x64/x86
|-Fixed Unresponsive/slow recent items menu in Vista and 7
|-Fixed The invalid picture bug
|-Fixed ViStart not loading the correct user picture in Windows Vista
|-Fixed Clear frequently used programs list tickbox in options sometimes doesn’t work
-Updated Windows Seven visual style
|-Start panel logoff buttons
|-Taskband group menu background and text color
|-Taskband scroll bar
|-Taskbar sizing bar
-Updated Windows startup sound with ones from imageres.dll instead of default sounds scheme