General System Registry Secrets
Table of contents
I-129 Hive: HKEY_USER
� Key: Default\Control Panel\Desktop
� Value Name: ScreenSaveActive
� Data Type: REG_SZ
� Value: 1

This registry entry determines whether the screen saver specified in the Scrnsave.exe value is currently active. Setting this value to 0 temporarily disables the current screen saver.

I-130 Hive: HKEY_USERS
� Key: Default\Control Panel\Desktop
� Value Name: ScreenSaveIsSecure
� Data Type: REG_SZ
� Value: 0

This value determines whether the screen saver prompts for a password before allowing you access to the system. Since this value specifies the screensaver for the main logon screen, enabling this value is redundant. However, those of you who want double security measures can set this value to 1 (password security enabled). Log off for this value to take effect.


INSTALLATION

I-131 Problem: You install Windows NT from a local drive, either a floppy or CD-ROM. When you update or add components, Windows NT first looks for these components in the original location you installed from. If you installed an Intel version of Windows NT from the local drive e:\i386, that�s where NT looks first. Instead of having to lug the diskettes or CD with you, you can create a directory on your network and copy the pertinent directories from the installation disk.

For example, if you have only Intel-based machines, you may want to copy only the i386 directory to your network drive. Now when you update NT, you can access the installation files from the network. The problem is that NT still looks for your installation files from the original source (e:\i386). You can change the location in the dialog box, but you have to change it every time. Here is a way to update the registry to reflect the new home of your installation files.

Hive: HKEY_LOCAL_MACHINE
Key: Software\Microsoft\WindowsNT\CurrentVersion
Value Name: SourcePath
Data Type: REG_SZ
Value: drive:\directory

I-132 If you have trouble installing software with Windows NT or if you are constantly prompted to insert your diskette into non-existent drives, consider making these changes. These registry entries let you specify which installation drives are defaults.

Hive: HKEY_LOCAL_MACHINE
Key: Software\Microsoft\WindowsNT\CurrentVersion
Value Name: SourcePath
Data Type: REG_SZ
Value: E:\i386\

This value is the drive that Windows NT was installed from.

I-133 Hive: HKEY_LOCAL_MACHINE
� Key: Software\Microsoft\WindowsNT\CurrentVersion
� Value Name: PathName
� Data Type: REG_SZ
� Value: C:\Winnt40

This value is the current directory of the OS.

I-134 Hive: HKEY_LOCAL_MACHINE
� Key: Software\Microsoft\WindowsNT\CurrentVersion
� Value Name: SystemRoot
� Data Type: REG_SZ
� Value: C:\Winnt40

This value is the same as PathName; it�s the directory in which Windows NT was installed.

These entries are for older applications � 16 bit and the like.

I-135 Hive: HKEY_LOCAL_MACHINE
� Key: Software\Microsoft\Windows\CurrentVersion\Setup
� Value Name: BootDir
� Data Type: REG_SZ
� Value: C:\

I-136 Hive: HKEY_LOCAL_MACHINE
� Key: Software\Microsoft\Windows\CurrentVersion\Setup
� Value Name: Installation Sources
� Data Type: REG_MULTI_SZ
� Value: A:\

I-137 Hive: HKEY_LOCAL_MACHINE
� Key: Software\Microsoft\Windows\CurrentVersion\Setup
� Value Name: SourcePath
� Data Type: REG_SZ
� Value: A:\

I-138 Are you having problems uninstalling software? Even though you uninstall the software according to the manufacturer�s directions, it just won�t go away from the Add/Remove list. Try this registry key and its associated value to fix your problem. You can also just remove the key for the specific application and it will no longer appear on the Add/Remove programs list.

These entries are useful if you have deleted some applications from your hard drive without using the control panel applet.

Hive: HKEY_LOCAL_MACHINE
Key: Software\Microsoft\Windows\CurrentVersion\Uninstall\ [appname]
Value Name: DisplayName
Data Type: REG_SZ
Value:

I-139 Hive: HKEY_LOCAL_MACHINE
� Key: Software\Microsoft\Windows\CurrentVersion\Uninstall\ [appname]
� Value Name: UninstallString
� Data Type: REG_SZ
� Value:

This information is very useful. Sometimes what the uninstall programs actually need to run and what is stored in the registry differ. If you need to, you can manually correct this value.

Restart the machine for the new values to take effect. Next time you need to install something from the installation disk, you can use your new settings.


CONTROL PANEL

Do you need to customize what the Control Panel displays to your users? These registry entries let you limit what is displayed.

I-140 Hive: HKEY_CURRENT_USER
� Key: Control Panel

Add the following key under the control panel key:

I-141 Key: Don�t Load
� Value Name: Console.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Console.cpl control panel applet, which controls the console functions and configuration. A value of �yes� prohibits the loading of the .cpl file. A blank value allows the file to be loaded and displayed.

I-141 Value Name: Liccpa.cpl11
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Liccpa.cpl control panel applet, which controls the licensing functions and configuration.

I-142 Value Name: Access.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Access.cpl control panel applet, which controls the accessibility functions and configuration.

I-143 Value Name: Appwiz.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Appwiz.cpl control panel applet, which controls the Add and Remove applications functions and configuration.

I-144 Value Name: Bhcontrol.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Bhcontrol.cpl control panel applet, which controls the network monitor function and configuration.

I-145 Value Name: Desk.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Desk.cpl control panel applet, which controls the display functions and configuration.

I-146 Value Name: Devapps.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Devapps.cpl control panel applet, which controls the PC card, SCSI, and Tape device functions and configuration.

I-147 Value Name: Findfast.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Findfast.cpl control panel applet, which controls the FindFast functions and configuration.

I-148 Value Name: Inetcpl.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Inetcpl.cpl control panel applet, which controls the Internet functions and configuration.

I-149 Value Name: Intl.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Intl.cpl control panel applet, which controls the regional settings functions and configuration.

I-150 Value Name: Main.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Main.cpl control panel applet, which controls the mouse, keyboard, fonts, and printer functions and configuration.

I-151 Value Name: Joy.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Joy.cpl control panel applet, which controls the joystick functions and configuration.

I-152 Value Name: Mlcfg32.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Mlcfg32.cpl control panel applet, which controls the mail and fax functions and configuration.

I-153 Value Name: Mmsys.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Mmsys.cpl control panel applet, which controls the multimedia and sound functions and configuration.

I-154 Value Name: Modem.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Modem.cpl control panel applet, which controls the modem functions and configuration.

I-155 Value Name: Ncpa.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Ncpa.cpl control panel applet, which controls the network functions and configuration.

I-156 Value Name: Nwc.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Nwc.cpl control panel applet, which controls the Gateway Services for Novell functions and configuration.

I-157 Value Name: Odbccp32.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Odbccp32.cpl control panel applet, which controls the ODBC functions and configuration.

I-158 Value Name: Ports.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Ports.cpl control panel applet, which controls the ports functions and configuration.

I-159 Value Name: Rascpl.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Rascpl.cpl control panel applet, which controls the RAS functions and configuration.

I-160 Value Name: Sfmmgr.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Sfmmgr.cpl control panel applet, which controls the MacFile functions and configuration.

I-161 Value Name: Srvmgr.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Srvmgr.cpl control panel applet, which controls the devices, server, and services functions and configuration.

I-162 Value Name: Sysdm.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Sysdm.cpl control panel applet, which controls the System functions and configuration.

I-163 Value Name: Telephon.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Telephon.cpl control panel applet, which controls the telephony functions and configuration.

I-164 Value Name: Themes.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Themes.cpl control panel applet, which controls the Desktop Themes functions and configuration.

I-165 Value Name: Ups.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Ups.cpl control panel applet, which controls the UPS functions and configuration.

I-166 Value Name: Datetime.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Datetime.cpl control panel applet, which controls the date and time configurations and functions.

I-167 Value Name: Wgpocpl.cpl
� Data Type: REG_SZ
� Value: yes

This value tells the Control Panel not to load the Wgpocpl.cpl control panel applet, which controls the Microsoft Mail Post Office functions and configuration.


ICONS

I-168 When you click My Computer, the default setup is to display all your drives. How about having My Computer come up in Explorer view instead? Change this registry entry.

Hive: HKEY_CLASS_ROOT
Key: CLSID\{20D04FEO-3AEA-1069-A2D8-08002B30309D}\She ll

Add the following key under the shell key.

Key: Open

Add the following key under the new Open key.

Key: command

I-169 You can do the same thing to the Network Neighborhood by modifying the following registry key:

Hive: HKEY_CLASS_ROOT
Key: CLSID\{208D2C60-3AEA-1069-A2D7-08002B30309D}\She ll

As before, add the following key under the shell key.

Key: Open

Add the following key under the new Open key.

Key: command

Add the following value under the Command key.

Value Name:
Data Type: REG_SZ
Value: Explorer.exe

You can also add this feature to these following objects by changing these keys:

I-170 Recycle Bin CLSID\{645FF040-5081-101B-9F08-00AA0 02F954E}

I-171 My Briefcase CLSID\{85BBD920-42A0-1069-A2E4-08002 B30309D}

Follow the same procedure you did with My Computer.

I-172 Next, we look at customizing various icons on your system. Each example works for a specific icon. In each case, the number after the comma in the value is the particular icon that you wish to display from a file. In most examples, we use the number 2 to indicate the third icon, because the first icon in a file is numbered 0. If no number is used, the default is 0.

Hive: HKEY_LOCAL_MACHINE
Key: Software\Classes\CLSID\{85BBD920-42A0-1069-A2E4-08002 B30309D}
Value Name: DefaultIcon
Data Type: REG_EXPAND_SZ
Value: C:\Program Files\Plus!\Themes\Ancient Pathways Briefcase.ico,2

This entry modifies the briefcase icon on the desktop.

I-173 This entry modifies the Internet Explorer icon on the desktop.

Hive: HKEY_LOCAL_MACHINE
Key: Software\Classes\CLSID\{FBF23B42-E3F0-101B-8488-00AA0 03E56F8}
Value Name: DefaultIcon
Data Type: REG_EXPAND_SZ
Value: C:\Program Files\Plus!\Microsoft Internet\Iexplore.exe,0

I-174 The next three entries affect the recycle bin icon.

Hive: HKEY_LOCAL_MACHINE
Key: Software\Classes\CLSID\{645FF040-5081-1018-9F08-00AA0 02F954E}
Value Name: DefaultIcon
Data Type: REG_EXPAND_SZ
Value: C:\Program Files\Plus!\Themes\Ancient Pathways Recycle Full.ico,2

I-175 Value Name: Empty
� Data Type: REG_EXPAND_SZ
� Value: C:\Program Files\Plus!\Themes\Ancient Pathways Recycle Full.ico,2

I-176 Value Name: Full
� Data Type: REG_EXPAND_SZ
� Value: C:\Program Files\Plus!\Themes\Ancient Pathways Recycle Full.ico,2

I-177 This registry entry is for the Network Neighborhood icon.

Hive: HKEY_LOCAL_MACHINE
Key: Software\Classes\CLSID\{208D2C60-3AEA-1069-A2D7-08002 B30309D}
Value Name: DefaultIcon
Data Type: REG_EXPAND_SZ
Value: C:\Program Files\Plus!\Themes\Ancient Pathways Network.ico,2

I-178 This entry modifies the My Computer icon.

Hive: HKEY_LOCAL_MACHINE
Key: Software\Classes\CLSID\{20D04FE0-3AEA-1069-A2D8-08002 B30309D}
Value Name: DefaultIcon
Data Type: REG_EXPAND_SZ
Value: C:\Program Files\Plus!\Themes\Ancient Pathways Computer.ico,2




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