Do you enjoy going to the dentist? As this is going to be as much pain as that.
Hold with me as am going from memory, and as it Sunday that not to hot.
You need to try and activate via online, once failed select the Telephone option and it should generate an ID number that you need. Call the number and follow the prompts between the musak being played.
If this fails you should be put through to a human (loosely anyway) They should ask you about the reason you need reactivation. Make something up... ie hard drive died and needed replacement with closest match, that sort of thing.
Hope this helps a little anyway.