| 
Disable Group Policy Objects (Windows 2000/XP)
This setting is used to disable the use of group policy objects on the local computer.
1. Open your registry and find or create the key below.
2. Create a new DWORD value, or modify the existing value, called "DisableGPO" and set it according to the value data below.
3. Exit your registry; you may need to restart or log out of Windows for the change to take effect.
Domain member computers
Stand-alone computers benefit the most from Multiple Local Group Policy objects, wherein managing each computer is local. Domain-based computers apply Local Group Policy first and then domain-based policy. Windows Vista continues to use the "Last Writer Wins" method for conflict resolution. Therefore, policy settings originating from domain Group Policy overwrite any conflicting policy settings found in any Local Group Policy to include administrative, non-administrative, and user specific Local Group Policy. Domain administrators can disable processing Local Group Policy objects on clients running Windows Vista by enabling the "Turn off Local Group Policy objects processing" policy setting in a domain Group Policy object. You can find this setting under Computer Configuration\Administrative Templates\System\Group Policy.
Source: Step-by-Step Guide to Managing Multiple Local Group Policy Objects
Enable / Disable Group Policy - for Vista / 7 settings follow the link
Deploying Custom Registry Changes through Group Policy
This setting is used to disable the use of group policy objects on the local computer.
1. Open your registry and find or create the key below.
2. Create a new DWORD value, or modify the existing value, called "DisableGPO" and set it according to the value data below.
3. Exit your registry; you may need to restart or log out of Windows for the change to take effect.
Registry Settings
System Key: [HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\System]
Value Name: DisableGPO
Data Type: REG_DWORD (DWORD Value)
Value Data: (0 = default, 1 = disable group policy)
Value Name: DisableGPO
Data Type: REG_DWORD (DWORD Value)
Value Data: (0 = default, 1 = disable group policy)
Domain member computers
Stand-alone computers benefit the most from Multiple Local Group Policy objects, wherein managing each computer is local. Domain-based computers apply Local Group Policy first and then domain-based policy. Windows Vista continues to use the "Last Writer Wins" method for conflict resolution. Therefore, policy settings originating from domain Group Policy overwrite any conflicting policy settings found in any Local Group Policy to include administrative, non-administrative, and user specific Local Group Policy. Domain administrators can disable processing Local Group Policy objects on clients running Windows Vista by enabling the "Turn off Local Group Policy objects processing" policy setting in a domain Group Policy object. You can find this setting under Computer Configuration\Administrative Templates\System\Group Policy.
Source: Step-by-Step Guide to Managing Multiple Local Group Policy Objects
Enable / Disable Group Policy - for Vista / 7 settings follow the link
Deploying Custom Registry Changes through Group Policy