I finally got the code and got it registered only to find I can't find any of the dll files. Thanks ED, wheSennhieser must not realize some people don't understand German.:eek: No, if you already got your account activated (via e-mail), then all you need to do is login, then go to Profile->Seriennummer, and there you should see a button that will fill the 'Activation Code' field with the serial number you need to use in Service Center.