I had to activate a recently discovered MS Office Professional Edition 2003. The internet option was not available and the phone activation, as stated in earlier posts, is no longer supported. However, after calling the UK freephone no; 08000188354, a recorded greeting asked what product I wanted to activate. I was then asked to input my mobile/cell no. and a text with instructions would be sent. I received this within a minute and after adding various codes, the installation was completed.