Assuming it was a retail copy:
http://support.microsoft.com/kb/823570/en-us

--

JoAnn Paules
MVP Microsoft [Publisher]
Tech Editor for "Microsoft Publisher 2007 For Dummies"



"LynL" wrote in message
...
My computer was just reformatted so I am re-installing programs. I have
my
Office Ultimate 2007 discs, but no longer have the email (purchased via
internet) that provided my product key. How do I get a new product key so
I
can re-install it?