I am unable to install ms office enterprise edition 2007 due to 25 product key,pls provide me soon

I can't give you a key myself, because that violates Microsoft infringement rights. What you can do is when prompted call the 888 Microsoft toll free number and type in the numbers in your phone by the automated teller woman, and when finished she will give you a bunch of sets of new numbers. when she asks how many times you installed it, type in 25. when finished click finish on screen and you should be good to install again.