Короче легче вообще эту панель задач убрать, в delphi:
осталась проблема с восстановлением системы

1)
* Step 1. Click on Start and then select Run. In the Run field input regedit

* Step2. Your registry files and folders should be viewable, the registry key you will want to search for is HKCU\Software \Microsoft\Windows \CurrentVersion \Explorer\ StuckRects2

* Step 3. Once you have located this registry key, you will want to locate a value called Settings. This value is a REG_Binary type. Within this value, you should find the settings for the taskbar, as well as other settings including icon size and icon placement.

* Step 4. Because this value is written only when your computer log offs, it can be difficult to catch the value. You will first have to fiddle around with the environment and then export the data.

* Step 5. Once you have located and exported the data, test to see if the taskbar works properly.


2)
Windows XP: Lock the Taskbar Menu
HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Explorer\Advanced
TaskbarSizeMove
DWORD 1 Disables locking the taskbar 0 Enables locking the taskbar

3)Как в пункте 1 сделать шаги
HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Explorer\Streams\Desktop
TaskbarWinXP=

4)По System Restore
http://support.microsoft.com/kb/295659

При отключении System Restore удалит точки восстановления.Помешать всем действиям с реестром это не дать права администратора или Power Users(что по сути является администратором).