Quoted from MajorGeeks.com: “Version 2.10 adds support for Microsoft’s latest operating system, Windows Server 2003 as well as new features such as background defragmentation of hard disk(s), a context (right-click) menu entry for encrypting files and directories and changes to filename sorting in Windows Explorer, the ability to use the Tab key to navigate AutoComplete fields and change the ‘throbber’ graphic in Internet Explorer and many other new and enhanced features. Tweak UI is a free unsupported powertoy gives you access to system settings that are not exposed in the Windows XP default user interface, including mouse settings, Explorer settings, taskbar settings, and more.” (Another good free tool to use is X-Setup. You can safely use both without any interference from one another).