Cannot run Word following repair of XP

Had to run a repair on Windows XP Home following disk probem. Created a new Windows folder for the repair. System runs OK and user data was intact. Had to re-install the MS Office suite (97) on completion. Office runs OK except for Word which simply reports “This application must be installed to run”.
Tried un-install and re-install without success.
Excel and Powerpoint always run OK but Word doesn’t!

Your ideas would be much appreciated.
Simon K