Windows XP only: The system theme pack installer from NiwradSoft gives your crayola-inspired Windows XP desktop an impressive Windows 7-ish look—without wasting time hacking system files yourself. Installing the theme pack is as simple as clicking through the installer, though you may want to take your time and choose exactly which components to install—by default the package includes boot screens, logon screens, screensaver, system theme, and a ton of hacked resource files. Once you've installed and rebooted, you'll be greeted with a Windows 7 style desktop, complete with the fish wallpaper from the last beta. NiwradSoft Seven Remix XP is a free download for Windows XP users. If you want to add Windows 7 features to your XP desktop, check out previously mentioned Aero Shake, Aero Snap and Aero Peek utilities—then finish up the Windows 7 transformation with the very useful Windows 7 shortcut keys application.