How to change the Windows Logon screen saver in Windows XP

http://support.microsoft.com/kb/314493

Change the Logon Screen Saver

To change the logon screen saver, follow these steps.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 (http://support.microsoft.com/kb/322756/ ) How to back up and restore the registry in Windows

1. Click Start, and then click Run.
2. In the Open box, type regedt32, and then click OK.
3. In the Registry Editor window, locate the following registry key:
   HKEY_USERS\.DEFAULT\Control Panel\Desktop
4. In the right pane, double-click SCRNSAVE.EXE.
5. In the Edit String dialog box, type the name of the screen saver that you want in the Value data box, and then click OK. For example, if you want to use the Mystify screen saver as your logon screen saver, type ssmyst.scr.
   
   IMPORTANT: Make sure that you correctly specify the path to the screen saver. If the screen saver is located in %SystemRoot%\System32, the explicit path is not required.
6. Click Exit on the File menu to quit Registry Editor.

The logon screen saver changes to the screen saver that you specified.

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Change the Logon Screen Saver Timeout Time

You can also change the time that elapses before the logon screen saver starts. The default setting is 600 seconds (10 minutes).

To change the length of time before the logon screen saver starts, follow these steps.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 (http://support.microsoft.com/kb/322756/ ) How to back up and restore the registry in Windows

1. Click Start, and then click Run.
2. In the Open box, type regedt32, and then click OK.
3. In the Registry Editor window, locate the following registry key:
   HKEY_USERS\.DEFAULT\Control Panel\Desktop
4. In the right pane, double-click ScreenSaveTimeOut.
5. In the Edit String dialog box that appears, type the number of seconds after which you want the screen saver to start in the Value data box, and then click OK. For example, if you want the screen saver to start after 5 minutes, type 300.
6. Click Exit on the File menu to quit Registry Editor.

The length of time that elapses before the logon screen saver starts is changed to the value that you specified.

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Turn Off the Logon Screen Saver

To turn off the logon screen saver, follow these steps.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 (http://support.microsoft.com/kb/322756/ )

How to back up and restore the registry in Windows

1. Click Start, and then click Run.
2. In the Open box, type regedt32, and then click OK.
3. In the Registry Editor window, locate the following registry key:
   HKEY_USERS\.DEFAULT\Control Panel\Desktop
4. In the right pane, double-click ScreenSaveActive.
5. In the Edit String dialog box, type 0 in the Value data box, and then click OK.
6. Click Exit on the File menu to quit Registry Editor.

The logon screen saver is turned off.