Windows Registry Tricks,

24. Disable Registry editing
"HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\ Curr entVersion\Policies\System"
Create a new DWORD "DisableRegistryTools" and change its value to "0" for allowing Regeditand "1" for disabling it.

25. Disable task scheduler
" HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Curr entVersion\RunServices"
Delete the value from "SchedulingAgent". Usually its value is set to "'mstask.exe".

26. Remove My computer from desktop and start menu
User Key: "HKEY_CURRENT_USER\Software\Microsoft\Windows\ Curr entVersion\Policies\NonEnum"
and
System Key: "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows \Cur rentVersion\Policies\NonEnum"
Create "{20D04FE0-3AEA-1069-A2D8-08002B30309D}" and change its value to "1" for removing. Change its value to "0" for showing.

27. Show Windows version on desktop
User Key: "HKEY_CURRENT_USER\Control Panel\Desktop"
Create a new DWORD " PaintDesktopVersion" and change its value to "1" for showing and "0" for removing.

28. Remove My documenst from desktop
Windows 95, 98 and Me

"HKEY_CURRENT_USER\Software\Classes\CLSID\{450 D8FB A-AD25-11D0-98A8-0800361B1103}\ShellFolder"
Windows NT, 2000 and XP
"HKEY_CURRENT_USER\Software\Microsoft\Windows\ Curr entVersion\Explorer\CLSID\{450D8FBA-AD25-11D0-98A8-0800361B1103}\ShellFolder"
Modify the value called "Attributes" as "0xf0500174" to hide or "0xf0400174" to show.

29. Disable Scan disk after improper shutdown
" HKEY_LOCAL_MACHINE\System\CurrentControlSet\Contro l\FileSystem"
create a new DWORD "DisableScandiskOnBoot" and change its value to "01" for disablng and "00" for enabling.

30. Automatically end Hung programs.
" HKEY_CURRENT_USER\Control Panel\Desktop"
and
System Key: [HKEY_USERS\.DEFAULT\Control Panel\Desktop"
Modify the value of "AutoEndTasks" to "1".