
There are no preference settings to enable/disable to the clip book (clipboard) in MS Office. But you can modify the registry directly to enable/disable the rather annoying clip book.
each version of office will have a different branch with associated key, for example office2000 is version 10.0 -- and to do this, you need to add/change a DWORD value called AcbControl
HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Common\General\AcbControl = 1
AcbControl = 1, disable
AcbControl = 0, enable