Another New MS Tool http://www.microsoft.com/technet/itsolutions/security/tools/locktool.asp

You forgot the major addition: 3. Compatability Mode - this allows Windows XP to use most Win9x software etc that Win2000 can't use due to compatability issues. Compatability Mode even lets you play DOS games (duke nukem 3d etc) under WinXP with full resolution VESA and full audio that wasn't possible under Win2000. Also: 4. Remote Admin mode (basically single session terminal server) so you can use you PC from anywhere. 5. Termination of dual windows versions (ie. nonNT (Win95/98/ME) and NT based (WinNT/Win2000) OS). From now on Windows will be NT based only. (this merge was meant to occur with Win95 but was delayed as most hardware/software manufacters were not ready) 6. XP is designed to have Win2000 stability but with the usability of Win9x so that win9x users who would not understand Win2000 can use XP (installer has also been simplified).