Based on your previous questions I believe you are using a Mac and as I have pointed out previously...
This is not the correct forum for you posting. For the various Office for the Mac applications please post your questions to the appropriate Office for the Mac forum located in: http://answers.microsoft.com/en-us
In addition, contrary to other advice provided, re-installing Mac Office is the LAST thing you should ever do... it usually makes matters worse. For the proper advice on Mac Office related issues go to the forum I have indicated above. MVP's there, including
myself, are qualified to answer your questions.
Kind Regards, Rich ... http://greatcirclelearning.com