Phone activation can be initiated by typing in the following into the Run box..

slui.exe 4 

 The Australian Phone number for MSOffice support is...

For more Info...

http://answers.microsoft.com/en-us/office/forum/office_2010-office_install/microsoft-office-wont-let-me-activate-the-product/ee045d49-6dd2-43bd-9bfb-c3490ba19f02