Disabling Sharing Folder on Desktops thru Group Policy of Windows 2000 Ser

Hi

I need help from you. As we are having more than 1000 Desktops, I want to disable Folder Sharing option on all desktops. We can disable each Desktop wise but I want to disable thru Group Policy. We are having Windows 2000 Server also Active Directories and all the desktops are in domain. Can you please give us some option to disable Folder sharing option on all desktops at one go.