Try the Microsoft Office 2007 uninstaller.
Personally I would backup and regroup a bit.
I would uninstall ALL versions of office that you have on the system then reboot and install only the version you want.
I loved Office 97. It did everything I needed it to do.
Last I checked when you type ABC in any version of Word you get ABC
1 + 1 = 2 in every version of Excel.
Anything other than that is bells and whistles.
Newer doesnt necessarily mean better.
I dont like the newer versions of Office and am perfectly content with Office 2000 which I run.
To me, the newer versions are too cluttered.