How to change the time allowed to wait for an application at shutdown?

". How to change the time allowed to wait for an application at shutdown?"

When you shutdown a Windows (XP, 2000, or 2003) computer, the OS will tell each of the running applications and services to close, and gives them a period of time (20 seconds) to do so gracefully. If the application doesn't respond, the user is prompted with options to cancel, wait, or kill the application. With a change to the following Registry entry, you can adjust the 20 second timeout period, which can be helpful if you have an application that normally takes longer to respond when shutting down. Keep in mind that the longer you make the timeout period, the longer it could potentially take your computer to shut down. In the case of a UPS shutdown because of loss of power, this could potentially extend the shutdown time past the life of the battery, so use discretion when changing this entry.

Hive: HKEY_CURRENT_USER
Key: \Control Panel\Desktop
Name: WaitToKillAppTimeout
Data Type: REG_SZ
Value: Milliseconds in decimal (default is 20000)