Office re-configuring 2007 2003 maybe 2010
Step one find setup.exe file in programs common- microsoft shared - office12

back up the setup.exe file

change name of setup.exe
place say an x infront of setup so it reads xsetup.exe close

Step two Office re-configuring 2007 2003 maybe 2010

back up registry with say regedit
open HKEY_CLASSES_ROOT and scroll extensions down to

HKEY_CLASSES_ROOT.pip

Change permissions to full control on .pip remove if need be

when done just start office program say excel.. A new .pip will be created..all hassle gone