How to schedule windows xp to shutdown in two hours.

  1. Press start button
  2. Press "Run.."
  3. Type "shutdown -s -t 7200".
  4. Press OK!

Two hours are 60 seconds * 60 minutes * 2 hours = 7200
Twentyfour hours are 60 seconds * 60 minutes * 24 hours = 86400

Microsoft help file:

Allows you to shut down or restart a local or remote computer. Used without parameters, shutdown will logoff the current user.

Syntax
shutdown [{-l|-s|-r|-a}] [-f] [-m [\\ComputerName]] [-t xx] [-c "message"] [-d[u][p]:xx:yy]

Parameters

-l
Logs off the current user, this is also the defualt. -m ComputerName takes precedence.
-s
Shuts down the local computer.
-r
Reboots after shutdown
-a
Aborts shutdown. Ignores other parameters, except -l and ComputerName. You can only use -a during the time-out period.
-f
Forces running applications to close.
-m [\\ComputerName]
Specifies the computer that you want to shut down.
-t xx
Sets the timer for system shutdown in xx seconds. The default is 20 seconds.
-c "message"
Specifies a message to be displayed in the Message area of the System Shutdown window. You can use a maximum of 127 characters. You must enclose the message in quotation marks.
-d [u][p]:xx:yy
Lists the reason code for the shutdown. The following table lists the different values.

Value Description
u Indicates a user code.
p Indicates a planned shutdown code.
xx Specifies the major reason code (0-255).
yy Specifies the minor reason code (0-65536).
/?
Displays help at the command prompt.