Robert;
From XP HELP:
To automatically put your computer into hibernation
You must be logged on as a computer administrator in order to complete this
procedure.
1.. Open Power Options in Control Panel.
2.. Click the Hibernate tab, select the Enable hibernate support check box,
and then click Apply.
If the Hibernate tab is unavailable, your computer does not support this
feature.
3.. Click the APM tab, click Enable Advanced Power Management support, and
then click Apply.
The APM tab is unavailable on ACPI-compliant computers. ACPI automatically
enables Advanced Power Management, which disables the APM tab.
4.. Click the Power Schemes tab, and then select a time period in System
hibernates. Your computer hibernates after it has been idle for the specified
amount of time.
Notes
a.. To open Power Options, click Start, point to Settings, click Control
Panel, and then double-click Power Options.
b.. When you put your computer into hibernation, everything in computer
memory is saved on your hard disk, and your computer is switched off. When you
turn the computer back on, all programs and documents that were open when you
turned the computer off are restored on the desktop.
c.. To put your computer into hibernation, you must have a computer that is
set up by the manufacturer to support this option.
d.. Using Power Options in Control Panel, you can adjust any power management
option that your computer's unique hardware configuration supports. Because
these options may vary widely from computer to computer, the options described
may differ from what you see. Power Options automatically detects what is
available on your computer and shows you only the options that you can control.
Wes