How to change the product key for Microsoft Office 2007

This is direct from Microsoft's support website.


1. Close all Office programs.
2. Click Start, click Run, type regedit, and then click OK.
3. Locate and then click the following subkey:

• HKEY_LOCAL_MACHINE \Software\Microsoft\Office\12.0\Registration

4. Under the Registration subkey,

a. Right-click the DigitalProductID registry entry, click Delete, and then click Yes.
b. Right-click the ProductID registry entry, click Delete, and then click Yes.

5. Close Registry Editor.
6. Open an Office program, such as Microsoft Word. When you receive a message that prompts you for the product key, type the new product key, and then click OK.

Head to Microsoft's support page for full details.