check here

http://support.microsoft.com/kb/918165

--
HTH
Nick Hodge
Microsoft MVP - Excel
Southampton, England
www.nickhodge.co.uk
HIS


"Vinay Naidu" <Vinay wrote in message
...
i am unable to add, delete or modify in excel or word. Even the function
toolbar is inactive.

Pls advise what is the problem?