Recently I came across an issue that was a little intimidating at first, but with a little research it turned out to be a piece of cake.
Office 2003 Outlook user claims that he cant send attachments by email. I went and saw that error message
This copy of office is not genuine
This is how I fixed it:
Close all the open office programs (Word, Excel, Power Point, Outlook, etc)
Go to the Start menu and select Run.
Find the file named: OGAAddin.dll
Right click the file and select Rename
Rename the file to OGAAddin.dll.old
After renaming, close all the windows and open up your program.
The Message will be gone and you will be allowed to continue working.
Works with Microsoft Office 2003 and Microsoft Office 2007.