As suggested above I've installed and run Belarc to find the key to my Office 2000 installation as I tried re-installing it (to cure a prob) but it only tells me the numeric product code and NOT the 25 digit alphanumeric key. When attempting an install it says 'the key is not valid' even though it's the same as the one on the CD years ago?????
I think that you will find: quote (from experts-exchange site)
quote/"Office 2000 Product key is encrypted. For Office 97 it was in the help menu of Word or Excel. For XP they don't need to encrypt it because of product activation. But for 2000 they went the way of encryption.
Belarc Advisor & Magical Jelly Bean can retrieve the product key for Office 97, XP and XP Pro -- but not for Office 2000. For Office 2000, your choice is either to find the original CD case or to contact Microsoft to tell you the product key. They'll need your product ID etc." /end quote
so i guess your only option is to contact microsoft and plead that your original key on cd is giving you problems