The product key affixed to your new computer is
for Windows Vista and not any Microsoft Office
software.
Apparently, you had a trial version of Microsoft Office installed. You'll
need to purchase a license for Microsoft Office in order
to continue the use of the program.
Please see the following:
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 determine whether you have a trial edition of a 2007 Office suite or
program installed:
http://support.microsoft.com/kb/927920/en-us
--
Carey Frisch
Microsoft MVP
Windows - Shell/User
Microsoft Community Newsgroups
news://msnews.microsoft.com/