Hello Harrybwf,
Windows Vista and Office are two different programs. The program that is asking for the Product Key is Office.
Computer manufacturers (including Acer) often include a trial version of Microsoft Office, in the computers that they sell. If you are getting a prompt to type in a Product Key when opening a Microsoft Office program, it is likely that Office's trial period has ended and to continue using Office, you'll need to purchase the full version Office.
The product key affixed to your computer is for Windows Vista (the operating system) and not for Microsoft Office. Please review the following:
How to determine whether you have a trial edition of a 2007 Office suite or program installed:
http://support.microsoft.com/kb/927920/en-us
How to convert a trial version of a 2007 Office suite or program to a full retail perpetual license version:
http://support.microsoft.com/kb/927756/en-us
How to buy the 2007 Microsoft Office suites:
http://office.microsoft.com/en-us/suites/FX101678741033.aspx?ofcresset=1
How to Buy Office Home and Student 2007 Edition:
http://office.microsoft.com/en-us/suites/FX101674081033.aspx
Thank you,
Darin Smith
WGA Forum Manager
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