[Compiller]

Я уже писал для XP
Для установки кнопки Hibernate по умолчанию используется

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\System\Shutdown]
"HibernateAsDefault"=dword:00000001

Вполне возможно подобное годится и для Shutdown?

Проверьте - авось это то что вам надо?

А в висте в панели управления Электропитание дополнительно настраивается.

Или вот
Отсюда - сам кроме Hibernate не проверял
http://www.theeldergeek.com/forum/in...howtopic=18088

All wrong.

To configure the default option in the Windows XP shutdown dialog box to be
"Shutdown", configure the following registry value:

Key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer
Value: Shutdown Setting
Type: REG_DWORD
Radix: Hex
Data: 00000002
----------
Possible values for Shutdown Setting:

00000001 = Log Off
00000002 = Shut Down
00000004 = Restart
00000010 = Stand By
00000020 = Stand By (with wakeup events disabled)
00000040 = Hibernate
00000080 = Disconnect (only available in Terminal Services sessions)


You will need to apply this registry setting every time the user logs on. This is
due to the fact that if the user changes this value to something other than
Shutdown, Windows will continue to remember this changed value. This registry
change will need to be applied every time the user logs on to make certain that
"Shutdown" is the default value for each user.