

Click Remove to remove the product(s) that you want to uninstall from the computer.In the Currently installed programs list, locate and select products that did not pass validation.(For Windows Vista, under Programs, click Uninstall a Program.) Click Start, and then click Control Panel.Ask for their help to ensure that the copy of Office you purchased or received with the purchase of a new computer is genuine.

You can also contact the business where you purchased Office, purchased your computer with Office pre-installed, or had your computer serviced. In that case, your best options to acquire genuine Microsoft Office are outlined on this Office Genuine Advantage web page.
OFFICE XP PRO ISO DIGITAL RIVER SOFTWARE
If your computer does not belong to a large organization, you may be a victim of software counterfeiting. Solution: If your computer belongs to a large organization and you believe you are receiving this message in error, talk to your system administrator.
OFFICE XP PRO ISO DIGITAL RIVER INSTALL
This key is reserved for the exclusive use of this customer, and cannot be used to install other copies of Microsoft Office. Problem: The product key used to install Office has been identified by Microsoft as a key that was issued to a large, corporate customer.

Now in 2009 it has been declared non-genuine for the following reason : Microsoft Office XP Professional with FrontPage I was given a copy of MS Office 2000 by my employer to install on my home computer back in 2000 to do work at home.
