A little over 2 years ago I purchased as new a demo/display laptop from a reputable national chain because none others of that model were in stock. The Vista and MS Office 2007 Enterprise activated at time of purchase. A few months later Windows online updating requested a key number to validate my MS Office. The seller supplied a number to me. I entered it, it was accepted and I continued to get updates and smooth operation for 2 years. About a month ago I notice popups from MS saying my Office is non genuine. Finally, this ribbon appears on each Office applications saying it is non-genuine. When I try to rectify this online or with the seller, I am advised to purchase and install genuine Office. I don't have idle cash lying around, can I live with this nuisance or are there any reliable patches to fix it?